21940808519

素因数分解:

$7^1\times {\mathrm{137}}^1\times {\mathrm{317}}^1\times {\mathrm{72173}}^1$

素因数の和:72634

約数の個数: 16

約数和(自身を含む): 25338270528

約数和(自身を除く): 3397462009

約数列:

[1, 7, 137, 317, 959, 2219, 43429, 72173, 304003, 505211, 9887701, 22878841, 69213907, 160151887, 3134401217, 21940808519]

約数ペア:

[(1, 21940808519), (7, 3134401217), (137, 160151887), (317, 69213907), (959, 22878841), (2219, 9887701), (43429, 505211), (72173, 304003)]