18401405

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{17609}}^1$

素因数の和:17644

約数の個数: 16

約数和(自身を含む): 25358400

約数和(自身を除く): 6956995

約数列:

[1, 5, 11, 19, 55, 95, 209, 1045, 17609, 88045, 193699, 334571, 968495, 1672855, 3680281, 18401405]

約数ペア:

[(1, 18401405), (5, 3680281), (11, 1672855), (19, 968495), (55, 334571), (95, 193699), (209, 88045), (1045, 17609)]