21119725

素因数分解:

$5^2\times {\mathrm{11}}^1\times {\mathrm{61}}^1\times {\mathrm{1259}}^1$

素因数の和:1341

約数の個数: 24

約数和(自身を含む): 29060640

約数和(自身を除く): 7940915

約数列:

[1, 5, 11, 25, 55, 61, 275, 305, 671, 1259, 1525, 3355, 6295, 13849, 16775, 31475, 69245, 76799, 346225, 383995, 844789, 1919975, 4223945, 21119725]

約数ペア:

[(1, 21119725), (5, 4223945), (11, 1919975), (25, 844789), (55, 383995), (61, 346225), (275, 76799), (305, 69245), (671, 31475), (1259, 16775), (1525, 13849), (3355, 6295)]