289804990

素因数分解:

$2^1\times 5^1\times {\mathrm{2789}}^1\times {\mathrm{10391}}^1$

素因数の和:13187

約数の個数: 16

約数和(自身を含む): 521886240

約数和(自身を除く): 232081250

約数列:

[1, 2, 5, 10, 2789, 5578, 10391, 13945, 20782, 27890, 51955, 103910, 28980499, 57960998, 144902495, 289804990]

約数ペア:

[(1, 289804990), (2, 144902495), (5, 57960998), (10, 28980499), (2789, 103910), (5578, 51955), (10391, 27890), (13945, 20782)]