21876125

素因数分解:

$5^3\times {\mathrm{19}}^1\times {\mathrm{61}}^1\times {\mathrm{151}}^1$

素因数の和:246

約数の個数: 32

約数和(自身を含む): 29402880

約数和(自身を除く): 7526755

約数列:

[1, 5, 19, 25, 61, 95, 125, 151, 305, 475, 755, 1159, 1525, 2375, 2869, 3775, 5795, 7625, 9211, 14345, 18875, 28975, 46055, 71725, 144875, 175009, 230275, 358625, 875045, 1151375, 4375225, 21876125]

約数ペア:

[(1, 21876125), (5, 4375225), (19, 1151375), (25, 875045), (61, 358625), (95, 230275), (125, 175009), (151, 144875), (305, 71725), (475, 46055), (755, 28975), (1159, 18875), (1525, 14345), (2375, 9211), (2869, 7625), (3775, 5795)]