205121380

素因数分解:

$2^2\times 5^1\times {\mathrm{1399}}^1\times {\mathrm{7331}}^1$

素因数の和:8739

約数の個数: 24

約数和(自身を含む): 431121600

約数和(自身を除く): 226000220

約数列:

[1, 2, 4, 5, 10, 20, 1399, 2798, 5596, 6995, 7331, 13990, 14662, 27980, 29324, 36655, 73310, 146620, 10256069, 20512138, 41024276, 51280345, 102560690, 205121380]

約数ペア:

[(1, 205121380), (2, 102560690), (4, 51280345), (5, 41024276), (10, 20512138), (20, 10256069), (1399, 146620), (2798, 73310), (5596, 36655), (6995, 29324), (7331, 27980), (13990, 14662)]