490356400

素因数分解:

$2^4\times 5^2\times {\mathrm{1225891}}^1$

素因数の和:1225909

約数の個数: 30

約数和(自身を含む): 1178082212

約数和(自身を除く): 687725812

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 40, 50, 80, 100, 200, 400, 1225891, 2451782, 4903564, 6129455, 9807128, 12258910, 19614256, 24517820, 30647275, 49035640, 61294550, 98071280, 122589100, 245178200, 490356400]

約数ペア:

[(1, 490356400), (2, 245178200), (4, 122589100), (5, 98071280), (8, 61294550), (10, 49035640), (16, 30647275), (20, 24517820), (25, 19614256), (40, 12258910), (50, 9807128), (80, 6129455), (100, 4903564), (200, 2451782), (400, 1225891)]