21163940

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{151171}}^1$

素因数の和:151187

約数の個数: 24

約数和(自身を含む): 50793792

約数和(自身を除く): 29629852

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 151171, 302342, 604684, 755855, 1058197, 1511710, 2116394, 3023420, 4232788, 5290985, 10581970, 21163940]

約数ペア:

[(1, 21163940), (2, 10581970), (4, 5290985), (5, 4232788), (7, 3023420), (10, 2116394), (14, 1511710), (20, 1058197), (28, 755855), (35, 604684), (70, 302342), (140, 151171)]