308980

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{2207}}^1$

素因数の和:2223

約数の個数: 24

約数和(自身を含む): 741888

約数和(自身を除く): 432908

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 2207, 4414, 8828, 11035, 15449, 22070, 30898, 44140, 61796, 77245, 154490, 308980]

約数ペア:

[(1, 308980), (2, 154490), (4, 77245), (5, 61796), (7, 44140), (10, 30898), (14, 22070), (20, 15449), (28, 11035), (35, 8828), (70, 4414), (140, 2207)]