21157561103

素因数分解:

$7^1\times {\mathrm{23}}^1\times {\mathrm{101}}^1\times {\mathrm{1301123}}^1$

素因数の和:1301254

約数の個数: 16

約数和(自身を含む): 25481212416

約数和(自身を除く): 4323651313

約数列:

[1, 7, 23, 101, 161, 707, 2323, 16261, 1301123, 9107861, 29925829, 131413423, 209480803, 919893961, 3022508729, 21157561103]

約数ペア:

[(1, 21157561103), (7, 3022508729), (23, 919893961), (101, 209480803), (161, 131413423), (707, 29925829), (2323, 9107861), (16261, 1301123)]