21331330279

素因数分解:

$7^2\times {\mathrm{61}}^1\times {\mathrm{7136611}}^1$

素因数の和:7136686

約数の個数: 12

約数和(自身を含む): 25220786808

約数和(自身を除く): 3889456529

約数列:

[1, 7, 49, 61, 427, 2989, 7136611, 49956277, 349693939, 435333271, 3047332897, 21331330279]

約数ペア:

[(1, 21331330279), (7, 3047332897), (49, 435333271), (61, 349693939), (427, 49956277), (2989, 7136611)]