19201819

素因数分解:

$7^1\times {\mathrm{13}}^1\times {\mathrm{79}}^1\times {\mathrm{2671}}^1$

素因数の和:2770

約数の個数: 16

約数和(自身を含む): 23941120

約数和(自身を除く): 4739301

約数列:

[1, 7, 13, 79, 91, 553, 1027, 2671, 7189, 18697, 34723, 211009, 243061, 1477063, 2743117, 19201819]

約数ペア:

[(1, 19201819), (7, 2743117), (13, 1477063), (79, 243061), (91, 211009), (553, 34723), (1027, 18697), (2671, 7189)]