204885440

素因数分解:

$2^6\times 5^1\times {\mathrm{640267}}^1$

素因数の和:640284

約数の個数: 28

約数和(自身を含む): 487884216

約数和(自身を除く): 282998776

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 160, 320, 640267, 1280534, 2561068, 3201335, 5122136, 6402670, 10244272, 12805340, 20488544, 25610680, 40977088, 51221360, 102442720, 204885440]

約数ペア:

[(1, 204885440), (2, 102442720), (4, 51221360), (5, 40977088), (8, 25610680), (10, 20488544), (16, 12805340), (20, 10244272), (32, 6402670), (40, 5122136), (64, 3201335), (80, 2561068), (160, 1280534), (320, 640267)]