21012873

素因数分解:

$3^1\times 7^1\times {\mathrm{331}}^1\times {\mathrm{3023}}^1$

素因数の和:3364

約数の個数: 16

約数和(自身を含む): 32126976

約数和(自身を除く): 11114103

約数列:

[1, 3, 7, 21, 331, 993, 2317, 3023, 6951, 9069, 21161, 63483, 1000613, 3001839, 7004291, 21012873]

約数ペア:

[(1, 21012873), (3, 7004291), (7, 3001839), (21, 1000613), (331, 63483), (993, 21161), (2317, 9069), (3023, 6951)]