20911436

素因数分解:

$2^2\times 7^2\times {\mathrm{13}}^1\times {\mathrm{29}}^1\times {\mathrm{283}}^1$

素因数の和:343

約数の個数: 72

約数和(自身を含む): 47592720

約数和(自身を除く): 26681284

約数列:

[1, 2, 4, 7, 13, 14, 26, 28, 29, 49, 52, 58, 91, 98, 116, 182, 196, 203, 283, 364, 377, 406, 566, 637, 754, 812, 1132, 1274, 1421, 1508, 1981, 2548, 2639, 2842, 3679, 3962, 5278, 5684, 7358, 7924, 8207, 10556, 13867, 14716, 16414, 18473, 25753, 27734, 32828, 36946, 51506, 55468, 57449, 73892, 103012, 106691, 114898, 180271, 213382, 229796, 360542, 402143, 426764, 721084, 746837, 804286, 1493674, 1608572, 2987348, 5227859, 10455718, 20911436]

約数ペア:

[(1, 20911436), (2, 10455718), (4, 5227859), (7, 2987348), (13, 1608572), (14, 1493674), (26, 804286), (28, 746837), (29, 721084), (49, 426764), (52, 402143), (58, 360542), (91, 229796), (98, 213382), (116, 180271), (182, 114898), (196, 106691), (203, 103012), (283, 73892), (364, 57449), (377, 55468), (406, 51506), (566, 36946), (637, 32828), (754, 27734), (812, 25753), (1132, 18473), (1274, 16414), (1421, 14716), (1508, 13867), (1981, 10556), (2548, 8207), (2639, 7924), (2842, 7358), (3679, 5684), (3962, 5278)]