21000686709

素因数分解:

$3^1\times {\mathrm{43}}^1\times {\mathrm{223}}^1\times {\mathrm{569}}^1\times {\mathrm{1283}}^1$

素因数の和:2121

約数の個数: 32

約数和(自身を含む): 28853637120

約数和(自身を除く): 7852950411

約数列:

[1, 3, 43, 129, 223, 569, 669, 1283, 1707, 3849, 9589, 24467, 28767, 55169, 73401, 126887, 165507, 286109, 380661, 730027, 858327, 2190081, 5456141, 12302687, 16368423, 31391161, 36908061, 94173483, 162796021, 488388063, 7000228903, 21000686709]

約数ペア:

[(1, 21000686709), (3, 7000228903), (43, 488388063), (129, 162796021), (223, 94173483), (569, 36908061), (669, 31391161), (1283, 16368423), (1707, 12302687), (3849, 5456141), (9589, 2190081), (24467, 858327), (28767, 730027), (55169, 380661), (73401, 286109), (126887, 165507)]