20217375

素因数分解:

$3^2\times 5^3\times {\mathrm{17971}}^1$

素因数の和:17992

約数の個数: 24

約数和(自身を含む): 36447216

約数和(自身を除く): 16229841

約数列:

[1, 3, 5, 9, 15, 25, 45, 75, 125, 225, 375, 1125, 17971, 53913, 89855, 161739, 269565, 449275, 808695, 1347825, 2246375, 4043475, 6739125, 20217375]

約数ペア:

[(1, 20217375), (3, 6739125), (5, 4043475), (9, 2246375), (15, 1347825), (25, 808695), (45, 449275), (75, 269565), (125, 161739), (225, 89855), (375, 53913), (1125, 17971)]