18798221

素因数分解:

${\mathrm{13}}^1\times {\mathrm{101}}^1\times {\mathrm{103}}^1\times {\mathrm{139}}^1$

素因数の和:356

約数の個数: 16

約数和(自身を含む): 20791680

約数和(自身を除く): 1993459

約数列:

[1, 13, 101, 103, 139, 1313, 1339, 1807, 10403, 14039, 14317, 135239, 182507, 186121, 1446017, 18798221]

約数ペア:

[(1, 18798221), (13, 1446017), (101, 186121), (103, 182507), (139, 135239), (1313, 14317), (1339, 14039), (1807, 10403)]