256758220

素因数分解:

$2^2\times 5^1\times {\mathrm{109}}^1\times {\mathrm{117779}}^1$

素因数の和:117897

約数の個数: 24

約数和(自身を含む): 544143600

約数和(自身を除く): 287385380

約数列:

[1, 2, 4, 5, 10, 20, 109, 218, 436, 545, 1090, 2180, 117779, 235558, 471116, 588895, 1177790, 2355580, 12837911, 25675822, 51351644, 64189555, 128379110, 256758220]

約数ペア:

[(1, 256758220), (2, 128379110), (4, 64189555), (5, 51351644), (10, 25675822), (20, 12837911), (109, 2355580), (218, 1177790), (436, 588895), (545, 471116), (1090, 235558), (2180, 117779)]