21858340

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{156131}}^1$

素因数の和:156147

約数の個数: 24

約数和(自身を含む): 52460352

約数和(自身を除く): 30602012

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 156131, 312262, 624524, 780655, 1092917, 1561310, 2185834, 3122620, 4371668, 5464585, 10929170, 21858340]

約数ペア:

[(1, 21858340), (2, 10929170), (4, 5464585), (5, 4371668), (7, 3122620), (10, 2185834), (14, 1561310), (20, 1092917), (28, 780655), (35, 624524), (70, 312262), (140, 156131)]