20458424

素因数分解:

$2^3\times 7^1\times {\mathrm{53}}^1\times {\mathrm{61}}^1\times {\mathrm{113}}^1$

素因数の和:240

約数の個数: 64

約数和(自身を含む): 45800640

約数和(自身を除く): 25342216

約数列:

[1, 2, 4, 7, 8, 14, 28, 53, 56, 61, 106, 113, 122, 212, 226, 244, 371, 424, 427, 452, 488, 742, 791, 854, 904, 1484, 1582, 1708, 2968, 3164, 3233, 3416, 5989, 6328, 6466, 6893, 11978, 12932, 13786, 22631, 23956, 25864, 27572, 41923, 45262, 47912, 48251, 55144, 83846, 90524, 96502, 167692, 181048, 193004, 335384, 365329, 386008, 730658, 1461316, 2557303, 2922632, 5114606, 10229212, 20458424]

約数ペア:

[(1, 20458424), (2, 10229212), (4, 5114606), (7, 2922632), (8, 2557303), (14, 1461316), (28, 730658), (53, 386008), (56, 365329), (61, 335384), (106, 193004), (113, 181048), (122, 167692), (212, 96502), (226, 90524), (244, 83846), (371, 55144), (424, 48251), (427, 47912), (452, 45262), (488, 41923), (742, 27572), (791, 25864), (854, 23956), (904, 22631), (1484, 13786), (1582, 12932), (1708, 11978), (2968, 6893), (3164, 6466), (3233, 6328), (3416, 5989)]