19810847

素因数分解:

$7^2\times {\mathrm{101}}^1\times {\mathrm{4003}}^1$

素因数の和:4118

約数の個数: 12

約数和(自身を含む): 23279256

約数和(自身を除く): 3468409

約数列:

[1, 7, 49, 101, 707, 4003, 4949, 28021, 196147, 404303, 2830121, 19810847]

約数ペア:

[(1, 19810847), (7, 2830121), (49, 404303), (101, 196147), (707, 28021), (4003, 4949)]