20021175

素因数分解:

$3^4\times 5^2\times {\mathrm{9887}}^1$

素因数の和:9909

約数の個数: 30

約数和(自身を含む): 37089888

約数和(自身を除く): 17068713

約数列:

[1, 3, 5, 9, 15, 25, 27, 45, 75, 81, 135, 225, 405, 675, 2025, 9887, 29661, 49435, 88983, 148305, 247175, 266949, 444915, 741525, 800847, 1334745, 2224575, 4004235, 6673725, 20021175]

約数ペア:

[(1, 20021175), (3, 6673725), (5, 4004235), (9, 2224575), (15, 1334745), (25, 800847), (27, 741525), (45, 444915), (75, 266949), (81, 247175), (135, 148305), (225, 88983), (405, 49435), (675, 29661), (2025, 9887)]