21016305

素因数分解:

$3^2\times 5^1\times {\mathrm{113}}^1\times {\mathrm{4133}}^1$

素因数の和:4257

約数の個数: 24

約数和(自身を含む): 36759528

約数和(自身を除く): 15743223

約数列:

[1, 3, 5, 9, 15, 45, 113, 339, 565, 1017, 1695, 4133, 5085, 12399, 20665, 37197, 61995, 185985, 467029, 1401087, 2335145, 4203261, 7005435, 21016305]

約数ペア:

[(1, 21016305), (3, 7005435), (5, 4203261), (9, 2335145), (15, 1401087), (45, 467029), (113, 185985), (339, 61995), (565, 37197), (1017, 20665), (1695, 12399), (4133, 5085)]