19002005

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{20323}}^1$

素因数の和:20356

約数の個数: 16

約数和(自身を含む): 26339904

約数和(自身を除く): 7337899

約数列:

[1, 5, 11, 17, 55, 85, 187, 935, 20323, 101615, 223553, 345491, 1117765, 1727455, 3800401, 19002005]

約数ペア:

[(1, 19002005), (5, 3800401), (11, 1727455), (17, 1117765), (55, 345491), (85, 223553), (187, 101615), (935, 20323)]