18991445

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{15013}}^1$

素因数の和:15052

約数の個数: 16

約数和(自身を含む): 25944192

約数和(自身を除く): 6952747

約数列:

[1, 5, 11, 23, 55, 115, 253, 1265, 15013, 75065, 165143, 345299, 825715, 1726495, 3798289, 18991445]

約数ペア:

[(1, 18991445), (5, 3798289), (11, 1726495), (23, 825715), (55, 345299), (115, 165143), (253, 75065), (1265, 15013)]