18988505

素因数分解:

$5^1\times {\mathrm{19}}^1\times {\mathrm{101}}^1\times {\mathrm{1979}}^1$

素因数の和:2104

約数の個数: 16

約数和(自身を含む): 24235200

約数和(自身を除く): 5246695

約数列:

[1, 5, 19, 95, 101, 505, 1919, 1979, 9595, 9895, 37601, 188005, 199879, 999395, 3797701, 18988505]

約数ペア:

[(1, 18988505), (5, 3797701), (19, 999395), (95, 199879), (101, 188005), (505, 37601), (1919, 9895), (1979, 9595)]