21256404

素因数分解:

$2^2\times 3^1\times {\mathrm{13}}^1\times {\mathrm{89}}^1\times {\mathrm{1531}}^1$

素因数の和:1640

約数の個数: 48

約数和(自身を含む): 54048960

約数和(自身を除く): 32792556

約数列:

[1, 2, 3, 4, 6, 12, 13, 26, 39, 52, 78, 89, 156, 178, 267, 356, 534, 1068, 1157, 1531, 2314, 3062, 3471, 4593, 4628, 6124, 6942, 9186, 13884, 18372, 19903, 39806, 59709, 79612, 119418, 136259, 238836, 272518, 408777, 545036, 817554, 1635108, 1771367, 3542734, 5314101, 7085468, 10628202, 21256404]

約数ペア:

[(1, 21256404), (2, 10628202), (3, 7085468), (4, 5314101), (6, 3542734), (12, 1771367), (13, 1635108), (26, 817554), (39, 545036), (52, 408777), (78, 272518), (89, 238836), (156, 136259), (178, 119418), (267, 79612), (356, 59709), (534, 39806), (1068, 19903), (1157, 18372), (1531, 13884), (2314, 9186), (3062, 6942), (3471, 6124), (4593, 4628)]