18464740

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{131891}}^1$

素因数の和:131907

約数の個数: 24

約数和(自身を含む): 44315712

約数和(自身を除く): 25850972

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 131891, 263782, 527564, 659455, 923237, 1318910, 1846474, 2637820, 3692948, 4616185, 9232370, 18464740]

約数ペア:

[(1, 18464740), (2, 9232370), (4, 4616185), (5, 3692948), (7, 2637820), (10, 1846474), (14, 1318910), (20, 923237), (28, 659455), (35, 527564), (70, 263782), (140, 131891)]