20839600

素因数分解:

$2^4\times 5^2\times {\mathrm{53}}^1\times {\mathrm{983}}^1$

素因数の和:1054

約数の個数: 60

約数和(自身を含む): 51063696

約数和(自身を除く): 30224096

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 40, 50, 53, 80, 100, 106, 200, 212, 265, 400, 424, 530, 848, 983, 1060, 1325, 1966, 2120, 2650, 3932, 4240, 4915, 5300, 7864, 9830, 10600, 15728, 19660, 21200, 24575, 39320, 49150, 52099, 78640, 98300, 104198, 196600, 208396, 260495, 393200, 416792, 520990, 833584, 1041980, 1302475, 2083960, 2604950, 4167920, 5209900, 10419800, 20839600]

約数ペア:

[(1, 20839600), (2, 10419800), (4, 5209900), (5, 4167920), (8, 2604950), (10, 2083960), (16, 1302475), (20, 1041980), (25, 833584), (40, 520990), (50, 416792), (53, 393200), (80, 260495), (100, 208396), (106, 196600), (200, 104198), (212, 98300), (265, 78640), (400, 52099), (424, 49150), (530, 39320), (848, 24575), (983, 21200), (1060, 19660), (1325, 15728), (1966, 10600), (2120, 9830), (2650, 7864), (3932, 5300), (4240, 4915)]