20795840

素因数分解:

$2^6\times 5^1\times {\mathrm{13}}^1\times {\mathrm{4999}}^1$

素因数の和:5029

約数の個数: 56

約数和(自身を含む): 53340000

約数和(自身を除く): 32544160

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 32, 40, 52, 64, 65, 80, 104, 130, 160, 208, 260, 320, 416, 520, 832, 1040, 2080, 4160, 4999, 9998, 19996, 24995, 39992, 49990, 64987, 79984, 99980, 129974, 159968, 199960, 259948, 319936, 324935, 399920, 519896, 649870, 799840, 1039792, 1299740, 1599680, 2079584, 2599480, 4159168, 5198960, 10397920, 20795840]

約数ペア:

[(1, 20795840), (2, 10397920), (4, 5198960), (5, 4159168), (8, 2599480), (10, 2079584), (13, 1599680), (16, 1299740), (20, 1039792), (26, 799840), (32, 649870), (40, 519896), (52, 399920), (64, 324935), (65, 319936), (80, 259948), (104, 199960), (130, 159968), (160, 129974), (208, 99980), (260, 79984), (320, 64987), (416, 49990), (520, 39992), (832, 24995), (1040, 19996), (2080, 9998), (4160, 4999)]