20199973984

素因数分解:

$2^5\times {\mathrm{31}}^2\times {\mathrm{251}}^1\times {\mathrm{2617}}^1$

素因数の和:2940

約数の個数: 72

約数和(自身を含む): 41272424424

約数和(自身を除く): 21072450440

約数列:

[1, 2, 4, 8, 16, 31, 32, 62, 124, 248, 251, 496, 502, 961, 992, 1004, 1922, 2008, 2617, 3844, 4016, 5234, 7688, 7781, 8032, 10468, 15376, 15562, 20936, 30752, 31124, 41872, 62248, 81127, 83744, 124496, 162254, 241211, 248992, 324508, 482422, 649016, 656867, 964844, 1298032, 1313734, 1929688, 2514937, 2596064, 2627468, 3859376, 5029874, 5254936, 7718752, 10059748, 10509872, 20119496, 20362877, 21019744, 40238992, 40725754, 80477984, 81451508, 162903016, 325806032, 631249187, 651612064, 1262498374, 2524996748, 5049993496, 10099986992, 20199973984]

約数ペア:

[(1, 20199973984), (2, 10099986992), (4, 5049993496), (8, 2524996748), (16, 1262498374), (31, 651612064), (32, 631249187), (62, 325806032), (124, 162903016), (248, 81451508), (251, 80477984), (496, 40725754), (502, 40238992), (961, 21019744), (992, 20362877), (1004, 20119496), (1922, 10509872), (2008, 10059748), (2617, 7718752), (3844, 5254936), (4016, 5029874), (5234, 3859376), (7688, 2627468), (7781, 2596064), (8032, 2514937), (10468, 1929688), (15376, 1313734), (15562, 1298032), (20936, 964844), (30752, 656867), (31124, 649016), (41872, 482422), (62248, 324508), (81127, 248992), (83744, 241211), (124496, 162254)]