18456920

素因数分解:

$2^3\times 5^1\times {\mathrm{157}}^1\times {\mathrm{2939}}^1$

素因数の和:3107

約数の個数: 32

約数和(自身を含む): 41806800

約数和(自身を除く): 23349880

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 157, 314, 628, 785, 1256, 1570, 2939, 3140, 5878, 6280, 11756, 14695, 23512, 29390, 58780, 117560, 461423, 922846, 1845692, 2307115, 3691384, 4614230, 9228460, 18456920]

約数ペア:

[(1, 18456920), (2, 9228460), (4, 4614230), (5, 3691384), (8, 2307115), (10, 1845692), (20, 922846), (40, 461423), (157, 117560), (314, 58780), (628, 29390), (785, 23512), (1256, 14695), (1570, 11756), (2939, 6280), (3140, 5878)]