20815925

素因数分解:

$5^2\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{3371}}^1$

素因数の和:3413

約数の個数: 24

約数和(自身を含む): 29268960

約数和(自身を除く): 8453035

約数列:

[1, 5, 13, 19, 25, 65, 95, 247, 325, 475, 1235, 3371, 6175, 16855, 43823, 64049, 84275, 219115, 320245, 832637, 1095575, 1601225, 4163185, 20815925]

約数ペア:

[(1, 20815925), (5, 4163185), (13, 1601225), (19, 1095575), (25, 832637), (65, 320245), (95, 219115), (247, 84275), (325, 64049), (475, 43823), (1235, 16855), (3371, 6175)]