19996245880

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{29}}^1\times {\mathrm{47}}^1\times {\mathrm{89}}^1\times {\mathrm{317}}^1$

素因数の和:506

約数の個数: 256

約数和(自身を含む): 51928128000

約数和(自身を除く): 31931882120

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 29, 40, 47, 52, 58, 65, 89, 94, 104, 116, 130, 145, 178, 188, 232, 235, 260, 290, 317, 356, 376, 377, 445, 470, 520, 580, 611, 634, 712, 754, 890, 940, 1157, 1160, 1222, 1268, 1363, 1508, 1585, 1780, 1880, 1885, 2314, 2444, 2536, 2581, 2726, 3016, 3055, 3170, 3560, 3770, 4121, 4183, 4628, 4888, 5162, 5452, 5785, 6110, 6340, 6815, 7540, 8242, 8366, 9193, 9256, 10324, 10904, 11570, 12220, 12680, 12905, 13630, 14899, 15080, 16484, 16732, 17719, 18386, 20605, 20648, 20915, 23140, 24440, 25810, 27260, 28213, 29798, 32968, 33464, 33553, 35438, 36772, 41210, 41830, 45965, 46280, 51620, 54379, 54520, 56426, 59596, 67106, 70876, 73544, 74495, 82420, 83660, 88595, 91930, 103240, 108758, 112852, 119192, 119509, 121307, 134212, 141065, 141752, 148990, 164840, 167320, 167765, 177190, 183860, 193687, 217516, 225704, 239018, 242614, 268424, 271895, 282130, 297980, 335530, 354380, 366769, 367720, 387374, 432071, 435032, 478036, 485228, 543790, 564260, 595960, 597545, 606535, 671060, 708760, 733538, 774748, 818177, 864142, 956072, 968435, 970456, 1087580, 1128520, 1195090, 1213070, 1326011, 1342120, 1467076, 1549496, 1576991, 1636354, 1728284, 1833845, 1936870, 2160355, 2175160, 2390180, 2426140, 2652022, 2934152, 3153982, 3272708, 3456568, 3667690, 3873740, 4090885, 4320710, 4780360, 4852280, 5304044, 5616923, 6307964, 6545416, 6630055, 7335380, 7747480, 7884955, 8181770, 8641420, 10608088, 10636301, 11233846, 12615928, 13260110, 14670760, 15769910, 16363540, 17238143, 17282840, 21272602, 22467692, 26520220, 28084615, 31539820, 32727080, 34476286, 38454319, 42545204, 44935384, 53040440, 53181505, 56169230, 63079640, 68952572, 76908638, 85090408, 86190715, 106363010, 112338460, 137905144, 153817276, 172381430, 192271595, 212726020, 224676920, 307634552, 344762860, 384543190, 425452040, 499906147, 689525720, 769086380, 999812294, 1538172760, 1999624588, 2499530735, 3999249176, 4999061470, 9998122940, 19996245880]

約数ペア:

[(1, 19996245880), (2, 9998122940), (4, 4999061470), (5, 3999249176), (8, 2499530735), (10, 1999624588), (13, 1538172760), (20, 999812294), (26, 769086380), (29, 689525720), (40, 499906147), (47, 425452040), (52, 384543190), (58, 344762860), (65, 307634552), (89, 224676920), (94, 212726020), (104, 192271595), (116, 172381430), (130, 153817276), (145, 137905144), (178, 112338460), (188, 106363010), (232, 86190715), (235, 85090408), (260, 76908638), (290, 68952572), (317, 63079640), (356, 56169230), (376, 53181505), (377, 53040440), (445, 44935384), (470, 42545204), (520, 38454319), (580, 34476286), (611, 32727080), (634, 31539820), (712, 28084615), (754, 26520220), (890, 22467692), (940, 21272602), (1157, 17282840), (1160, 17238143), (1222, 16363540), (1268, 15769910), (1363, 14670760), (1508, 13260110), (1585, 12615928), (1780, 11233846), (1880, 10636301), (1885, 10608088), (2314, 8641420), (2444, 8181770), (2536, 7884955), (2581, 7747480), (2726, 7335380), (3016, 6630055), (3055, 6545416), (3170, 6307964), (3560, 5616923), (3770, 5304044), (4121, 4852280), (4183, 4780360), (4628, 4320710), (4888, 4090885), (5162, 3873740), (5452, 3667690), (5785, 3456568), (6110, 3272708), (6340, 3153982), (6815, 2934152), (7540, 2652022), (8242, 2426140), (8366, 2390180), (9193, 2175160), (9256, 2160355), (10324, 1936870), (10904, 1833845), (11570, 1728284), (12220, 1636354), (12680, 1576991), (12905, 1549496), (13630, 1467076), (14899, 1342120), (15080, 1326011), (16484, 1213070), (16732, 1195090), (17719, 1128520), (18386, 1087580), (20605, 970456), (20648, 968435), (20915, 956072), (23140, 864142), (24440, 818177), (25810, 774748), (27260, 733538), (28213, 708760), (29798, 671060), (32968, 606535), (33464, 597545), (33553, 595960), (35438, 564260), (36772, 543790), (41210, 485228), (41830, 478036), (45965, 435032), (46280, 432071), (51620, 387374), (54379, 367720), (54520, 366769), (56426, 354380), (59596, 335530), (67106, 297980), (70876, 282130), (73544, 271895), (74495, 268424), (82420, 242614), (83660, 239018), (88595, 225704), (91930, 217516), (103240, 193687), (108758, 183860), (112852, 177190), (119192, 167765), (119509, 167320), (121307, 164840), (134212, 148990), (141065, 141752)]