81894560

素因数分解:

$2^5\times 5^1\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{31}}^1\times {\mathrm{79}}^1$

素因数の和:155

約数の個数: 192

約数和(自身を含む): 232243200

約数和(自身を除く): 150348640

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 19, 20, 22, 31, 32, 38, 40, 44, 55, 62, 76, 79, 80, 88, 95, 110, 124, 152, 155, 158, 160, 176, 190, 209, 220, 248, 304, 310, 316, 341, 352, 380, 395, 418, 440, 496, 589, 608, 620, 632, 682, 760, 790, 836, 869, 880, 992, 1045, 1178, 1240, 1264, 1364, 1501, 1520, 1580, 1672, 1705, 1738, 1760, 2090, 2356, 2449, 2480, 2528, 2728, 2945, 3002, 3040, 3160, 3344, 3410, 3476, 4180, 4345, 4712, 4898, 4960, 5456, 5890, 6004, 6320, 6479, 6688, 6820, 6952, 7505, 8360, 8690, 9424, 9796, 10912, 11780, 12008, 12245, 12640, 12958, 13640, 13904, 15010, 16511, 16720, 17380, 18848, 19592, 23560, 24016, 24490, 25916, 26939, 27280, 27808, 30020, 32395, 33022, 33440, 34760, 39184, 46531, 47120, 48032, 48980, 51832, 53878, 54560, 60040, 64790, 66044, 69520, 78368, 82555, 93062, 94240, 97960, 103664, 107756, 120080, 129580, 132088, 134695, 139040, 165110, 186124, 195920, 207328, 215512, 232655, 240160, 259160, 264176, 269390, 330220, 372248, 391840, 431024, 465310, 511841, 518320, 528352, 538780, 660440, 744496, 862048, 930620, 1023682, 1036640, 1077560, 1320880, 1488992, 1861240, 2047364, 2155120, 2559205, 2641760, 3722480, 4094728, 4310240, 5118410, 7444960, 8189456, 10236820, 16378912, 20473640, 40947280, 81894560]

約数ペア:

[(1, 81894560), (2, 40947280), (4, 20473640), (5, 16378912), (8, 10236820), (10, 8189456), (11, 7444960), (16, 5118410), (19, 4310240), (20, 4094728), (22, 3722480), (31, 2641760), (32, 2559205), (38, 2155120), (40, 2047364), (44, 1861240), (55, 1488992), (62, 1320880), (76, 1077560), (79, 1036640), (80, 1023682), (88, 930620), (95, 862048), (110, 744496), (124, 660440), (152, 538780), (155, 528352), (158, 518320), (160, 511841), (176, 465310), (190, 431024), (209, 391840), (220, 372248), (248, 330220), (304, 269390), (310, 264176), (316, 259160), (341, 240160), (352, 232655), (380, 215512), (395, 207328), (418, 195920), (440, 186124), (496, 165110), (589, 139040), (608, 134695), (620, 132088), (632, 129580), (682, 120080), (760, 107756), (790, 103664), (836, 97960), (869, 94240), (880, 93062), (992, 82555), (1045, 78368), (1178, 69520), (1240, 66044), (1264, 64790), (1364, 60040), (1501, 54560), (1520, 53878), (1580, 51832), (1672, 48980), (1705, 48032), (1738, 47120), (1760, 46531), (2090, 39184), (2356, 34760), (2449, 33440), (2480, 33022), (2528, 32395), (2728, 30020), (2945, 27808), (3002, 27280), (3040, 26939), (3160, 25916), (3344, 24490), (3410, 24016), (3476, 23560), (4180, 19592), (4345, 18848), (4712, 17380), (4898, 16720), (4960, 16511), (5456, 15010), (5890, 13904), (6004, 13640), (6320, 12958), (6479, 12640), (6688, 12245), (6820, 12008), (6952, 11780), (7505, 10912), (8360, 9796), (8690, 9424)]