21000268

素因数分解:

$2^2\times {\mathrm{31}}^1\times {\mathrm{163}}^1\times {\mathrm{1039}}^1$

素因数の和:1237

約数の個数: 24

約数和(自身を含む): 38205440

約数和(自身を除く): 17205172

約数列:

[1, 2, 4, 31, 62, 124, 163, 326, 652, 1039, 2078, 4156, 5053, 10106, 20212, 32209, 64418, 128836, 169357, 338714, 677428, 5250067, 10500134, 21000268]

約数ペア:

[(1, 21000268), (2, 10500134), (4, 5250067), (31, 677428), (62, 338714), (124, 169357), (163, 128836), (326, 64418), (652, 32209), (1039, 20212), (2078, 10106), (4156, 5053)]