21888750

素因数分解:

$2^1\times 3^1\times 5^4\times {\mathrm{13}}^1\times {\mathrm{449}}^1$

素因数の和:487

約数の個数: 80

約数和(自身を含む): 59043600

約数和(自身を除く): 37154850

約数列:

[1, 2, 3, 5, 6, 10, 13, 15, 25, 26, 30, 39, 50, 65, 75, 78, 125, 130, 150, 195, 250, 325, 375, 390, 449, 625, 650, 750, 898, 975, 1250, 1347, 1625, 1875, 1950, 2245, 2694, 3250, 3750, 4490, 4875, 5837, 6735, 8125, 9750, 11225, 11674, 13470, 16250, 17511, 22450, 24375, 29185, 33675, 35022, 48750, 56125, 58370, 67350, 87555, 112250, 145925, 168375, 175110, 280625, 291850, 336750, 437775, 561250, 729625, 841875, 875550, 1459250, 1683750, 2188875, 3648125, 4377750, 7296250, 10944375, 21888750]

約数ペア:

[(1, 21888750), (2, 10944375), (3, 7296250), (5, 4377750), (6, 3648125), (10, 2188875), (13, 1683750), (15, 1459250), (25, 875550), (26, 841875), (30, 729625), (39, 561250), (50, 437775), (65, 336750), (75, 291850), (78, 280625), (125, 175110), (130, 168375), (150, 145925), (195, 112250), (250, 87555), (325, 67350), (375, 58370), (390, 56125), (449, 48750), (625, 35022), (650, 33675), (750, 29185), (898, 24375), (975, 22450), (1250, 17511), (1347, 16250), (1625, 13470), (1875, 11674), (1950, 11225), (2245, 9750), (2694, 8125), (3250, 6735), (3750, 5837), (4490, 4875)]