21000427991

素因数分解:

${\mathrm{31}}^1\times {\mathrm{3931}}^1\times {\mathrm{172331}}^1$

素因数の和:176293

約数の個数: 8

約数和(自身を含む): 21683501568

約数和(自身を除く): 683073577

約数列:

[1, 31, 3931, 121861, 172331, 5342261, 677433161, 21000427991]

約数ペア:

[(1, 21000427991), (31, 677433161), (3931, 5342261), (121861, 172331)]