42639460

素因数分解:

$2^2\times 5^1\times {\mathrm{79}}^1\times {\mathrm{26987}}^1$

素因数の和:27075

約数の個数: 24

約数和(自身を含む): 90679680

約数和(自身を除く): 48040220

約数列:

[1, 2, 4, 5, 10, 20, 79, 158, 316, 395, 790, 1580, 26987, 53974, 107948, 134935, 269870, 539740, 2131973, 4263946, 8527892, 10659865, 21319730, 42639460]

約数ペア:

[(1, 42639460), (2, 21319730), (4, 10659865), (5, 8527892), (10, 4263946), (20, 2131973), (79, 539740), (158, 269870), (316, 134935), (395, 107948), (790, 53974), (1580, 26987)]