19581793

素因数分解:

$7^1\times {\mathrm{11}}^2\times {\mathrm{61}}^1\times {\mathrm{379}}^1$

素因数の和:469

約数の個数: 24

約数和(自身を含む): 25067840

約数和(自身を除く): 5486047

約数列:

[1, 7, 11, 61, 77, 121, 379, 427, 671, 847, 2653, 4169, 4697, 7381, 23119, 29183, 45859, 51667, 161833, 254309, 321013, 1780163, 2797399, 19581793]

約数ペア:

[(1, 19581793), (7, 2797399), (11, 1780163), (61, 321013), (77, 254309), (121, 161833), (379, 51667), (427, 45859), (671, 29183), (847, 23119), (2653, 7381), (4169, 4697)]