18919225

素因数分解:

$5^2\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{2531}}^1$

素因数の和:2577

約数の個数: 24

約数和(自身を含む): 26373312

約数和(自身を除く): 7454087

約数列:

[1, 5, 13, 23, 25, 65, 115, 299, 325, 575, 1495, 2531, 7475, 12655, 32903, 58213, 63275, 164515, 291065, 756769, 822575, 1455325, 3783845, 18919225]

約数ペア:

[(1, 18919225), (5, 3783845), (13, 1455325), (23, 822575), (25, 756769), (65, 291065), (115, 164515), (299, 63275), (325, 58213), (575, 32903), (1495, 12655), (2531, 7475)]