402759640

素因数分解:

$2^3\times 5^1\times {\mathrm{10068991}}^1$

素因数の和:10069002

約数の個数: 16

約数和(自身を含む): 906209280

約数和(自身を除く): 503449640

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 10068991, 20137982, 40275964, 50344955, 80551928, 100689910, 201379820, 402759640]

約数ペア:

[(1, 402759640), (2, 201379820), (4, 100689910), (5, 80551928), (8, 50344955), (10, 40275964), (20, 20137982), (40, 10068991)]