40001380

素因数分解:

$2^2\times 5^1\times {\mathrm{211}}^1\times {\mathrm{9479}}^1$

素因数の和:9699

約数の個数: 24

約数和(自身を含む): 84409920

約数和(自身を除く): 44408540

約数列:

[1, 2, 4, 5, 10, 20, 211, 422, 844, 1055, 2110, 4220, 9479, 18958, 37916, 47395, 94790, 189580, 2000069, 4000138, 8000276, 10000345, 20000690, 40001380]

約数ペア:

[(1, 40001380), (2, 20000690), (4, 10000345), (5, 8000276), (10, 4000138), (20, 2000069), (211, 189580), (422, 94790), (844, 47395), (1055, 37916), (2110, 18958), (4220, 9479)]