81181256

素因数分解:

$2^3\times {\mathrm{13}}^1\times {\mathrm{17}}^2\times {\mathrm{37}}^1\times {\mathrm{73}}^1$

素因数の和:163

約数の個数: 96

約数和(自身を含む): 181289640

約数和(自身を除く): 100108384

約数列:

[1, 2, 4, 8, 13, 17, 26, 34, 37, 52, 68, 73, 74, 104, 136, 146, 148, 221, 289, 292, 296, 442, 481, 578, 584, 629, 884, 949, 962, 1156, 1241, 1258, 1768, 1898, 1924, 2312, 2482, 2516, 2701, 3757, 3796, 3848, 4964, 5032, 5402, 7514, 7592, 8177, 9928, 10693, 10804, 15028, 16133, 16354, 21097, 21386, 21608, 30056, 32266, 32708, 35113, 42194, 42772, 45917, 64532, 65416, 70226, 84388, 85544, 91834, 129064, 139009, 140452, 168776, 183668, 274261, 278018, 280904, 367336, 548522, 556036, 596921, 780589, 1097044, 1112072, 1193842, 1561178, 2194088, 2387684, 3122356, 4775368, 6244712, 10147657, 20295314, 40590628, 81181256]

約数ペア:

[(1, 81181256), (2, 40590628), (4, 20295314), (8, 10147657), (13, 6244712), (17, 4775368), (26, 3122356), (34, 2387684), (37, 2194088), (52, 1561178), (68, 1193842), (73, 1112072), (74, 1097044), (104, 780589), (136, 596921), (146, 556036), (148, 548522), (221, 367336), (289, 280904), (292, 278018), (296, 274261), (442, 183668), (481, 168776), (578, 140452), (584, 139009), (629, 129064), (884, 91834), (949, 85544), (962, 84388), (1156, 70226), (1241, 65416), (1258, 64532), (1768, 45917), (1898, 42772), (1924, 42194), (2312, 35113), (2482, 32708), (2516, 32266), (2701, 30056), (3757, 21608), (3796, 21386), (3848, 21097), (4964, 16354), (5032, 16133), (5402, 15028), (7514, 10804), (7592, 10693), (8177, 9928)]