21307759

素因数分解:

${\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{269}}^1\times {\mathrm{379}}^1$

素因数の和:678

約数の個数: 16

約数和(自身を含む): 24624000

約数和(自身を除く): 3316241

約数列:

[1, 11, 19, 209, 269, 379, 2959, 4169, 5111, 7201, 56221, 79211, 101951, 1121461, 1937069, 21307759]

約数ペア:

[(1, 21307759), (11, 1937069), (19, 1121461), (209, 101951), (269, 79211), (379, 56221), (2959, 7201), (4169, 5111)]