30408980

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{217207}}^1$

素因数の和:217223

約数の個数: 24

約数和(自身を含む): 72981888

約数和(自身を除く): 42572908

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 217207, 434414, 868828, 1086035, 1520449, 2172070, 3040898, 4344140, 6081796, 7602245, 15204490, 30408980]

約数ペア:

[(1, 30408980), (2, 15204490), (4, 7602245), (5, 6081796), (7, 4344140), (10, 3040898), (14, 2172070), (20, 1520449), (28, 1086035), (35, 868828), (70, 434414), (140, 217207)]