405278320

素因数分解:

$2^4\times 5^1\times {\mathrm{5065979}}^1$

素因数の和:5065992

約数の個数: 20

約数和(自身を含む): 942272280

約数和(自身を除く): 536993960

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 5065979, 10131958, 20263916, 25329895, 40527832, 50659790, 81055664, 101319580, 202639160, 405278320]

約数ペア:

[(1, 405278320), (2, 202639160), (4, 101319580), (5, 81055664), (8, 50659790), (10, 40527832), (16, 25329895), (20, 20263916), (40, 10131958), (80, 5065979)]