18864815

素因数分解:

$5^1\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{11681}}^1$

素因数の和:11722

約数の個数: 16

約数和(自身を含む): 25233120

約数和(自身を除く): 6368305

約数列:

[1, 5, 17, 19, 85, 95, 323, 1615, 11681, 58405, 198577, 221939, 992885, 1109695, 3772963, 18864815]

約数ペア:

[(1, 18864815), (5, 3772963), (17, 1109695), (19, 992885), (85, 221939), (95, 198577), (323, 58405), (1615, 11681)]