20856854781

素因数分解:

$3^3\times 7^1\times {\mathrm{19}}^2\times {\mathrm{29}}^1\times {\mathrm{83}}^1\times {\mathrm{127}}^1$

素因数の和:293

約数の個数: 192

約数和(自身を含む): 39326515200

約数和(自身を除く): 18469660419

約数列:

[1, 3, 7, 9, 19, 21, 27, 29, 57, 63, 83, 87, 127, 133, 171, 189, 203, 249, 261, 361, 381, 399, 513, 551, 581, 609, 747, 783, 889, 1083, 1143, 1197, 1577, 1653, 1743, 1827, 2241, 2407, 2413, 2527, 2667, 3249, 3429, 3591, 3683, 3857, 4731, 4959, 5229, 5481, 7221, 7239, 7581, 8001, 9747, 10469, 10541, 11039, 11049, 11571, 14193, 14877, 15687, 16849, 16891, 21663, 21717, 22743, 24003, 25781, 29963, 31407, 31623, 33117, 33147, 34713, 42579, 45733, 45847, 50547, 50673, 64989, 65151, 68229, 69977, 73283, 73787, 77343, 89889, 94221, 94869, 99351, 99441, 104139, 137199, 137541, 151641, 152019, 200279, 209741, 209931, 219849, 221361, 232029, 269667, 282663, 284607, 298053, 305689, 320131, 320929, 411597, 412623, 454923, 456057, 489839, 600837, 629223, 629793, 659547, 664083, 696087, 809001, 868927, 917067, 960393, 962787, 1234791, 1237869, 1329563, 1401953, 1469517, 1802511, 1887669, 1889379, 1978641, 1992249, 2139823, 2606781, 2751201, 2881179, 2888361, 3805301, 3988689, 4205859, 4408551, 5407533, 5663007, 5808091, 6082489, 6419469, 7820343, 8253603, 8643537, 8665083, 9306941, 11415903, 11966067, 12617577, 13225653, 17424273, 18247467, 19258407, 23461029, 26637107, 27920823, 34247709, 35898201, 37852731, 40656637, 52272819, 54742401, 57775221, 79911321, 83762469, 102743127, 110353729, 121969911, 156818457, 164227203, 239733963, 251287407, 331061187, 365909733, 719201889, 772476103, 993183561, 1097729199, 2317428309, 2979550683, 6952284927, 20856854781]

約数ペア:

[(1, 20856854781), (3, 6952284927), (7, 2979550683), (9, 2317428309), (19, 1097729199), (21, 993183561), (27, 772476103), (29, 719201889), (57, 365909733), (63, 331061187), (83, 251287407), (87, 239733963), (127, 164227203), (133, 156818457), (171, 121969911), (189, 110353729), (203, 102743127), (249, 83762469), (261, 79911321), (361, 57775221), (381, 54742401), (399, 52272819), (513, 40656637), (551, 37852731), (581, 35898201), (609, 34247709), (747, 27920823), (783, 26637107), (889, 23461029), (1083, 19258407), (1143, 18247467), (1197, 17424273), (1577, 13225653), (1653, 12617577), (1743, 11966067), (1827, 11415903), (2241, 9306941), (2407, 8665083), (2413, 8643537), (2527, 8253603), (2667, 7820343), (3249, 6419469), (3429, 6082489), (3591, 5808091), (3683, 5663007), (3857, 5407533), (4731, 4408551), (4959, 4205859), (5229, 3988689), (5481, 3805301), (7221, 2888361), (7239, 2881179), (7581, 2751201), (8001, 2606781), (9747, 2139823), (10469, 1992249), (10541, 1978641), (11039, 1889379), (11049, 1887669), (11571, 1802511), (14193, 1469517), (14877, 1401953), (15687, 1329563), (16849, 1237869), (16891, 1234791), (21663, 962787), (21717, 960393), (22743, 917067), (24003, 868927), (25781, 809001), (29963, 696087), (31407, 664083), (31623, 659547), (33117, 629793), (33147, 629223), (34713, 600837), (42579, 489839), (45733, 456057), (45847, 454923), (50547, 412623), (50673, 411597), (64989, 320929), (65151, 320131), (68229, 305689), (69977, 298053), (73283, 284607), (73787, 282663), (77343, 269667), (89889, 232029), (94221, 221361), (94869, 219849), (99351, 209931), (99441, 209741), (104139, 200279), (137199, 152019), (137541, 151641)]