18357020

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{181}}^1\times {\mathrm{461}}^1$

素因数の和:662

約数の個数: 48

約数和(自身を含む): 42378336

約数和(自身を除く): 24021316

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 110, 181, 220, 362, 461, 724, 905, 922, 1810, 1844, 1991, 2305, 3620, 3982, 4610, 5071, 7964, 9220, 9955, 10142, 19910, 20284, 25355, 39820, 50710, 83441, 101420, 166882, 333764, 417205, 834410, 917851, 1668820, 1835702, 3671404, 4589255, 9178510, 18357020]

約数ペア:

[(1, 18357020), (2, 9178510), (4, 4589255), (5, 3671404), (10, 1835702), (11, 1668820), (20, 917851), (22, 834410), (44, 417205), (55, 333764), (110, 166882), (181, 101420), (220, 83441), (362, 50710), (461, 39820), (724, 25355), (905, 20284), (922, 19910), (1810, 10142), (1844, 9955), (1991, 9220), (2305, 7964), (3620, 5071), (3982, 4610)]