21502575

素因数分解:

$3^2\times 5^2\times {\mathrm{227}}^1\times {\mathrm{421}}^1$

素因数の和:664

約数の個数: 36

約数和(自身を含む): 38775048

約数和(自身を除く): 17272473

約数列:

[1, 3, 5, 9, 15, 25, 45, 75, 225, 227, 421, 681, 1135, 1263, 2043, 2105, 3405, 3789, 5675, 6315, 10215, 10525, 17025, 18945, 31575, 51075, 94725, 95567, 286701, 477835, 860103, 1433505, 2389175, 4300515, 7167525, 21502575]

約数ペア:

[(1, 21502575), (3, 7167525), (5, 4300515), (9, 2389175), (15, 1433505), (25, 860103), (45, 477835), (75, 286701), (225, 95567), (227, 94725), (421, 51075), (681, 31575), (1135, 18945), (1263, 17025), (2043, 10525), (2105, 10215), (3405, 6315), (3789, 5675)]