21053333

素因数分解:

$7^1\times {\mathrm{29}}^1\times {\mathrm{37}}^1\times {\mathrm{2803}}^1$

素因数の和:2876

約数の個数: 16

約数和(自身を含む): 25572480

約数和(自身を除く): 4519147

約数列:

[1, 7, 29, 37, 203, 259, 1073, 2803, 7511, 19621, 81287, 103711, 569009, 725977, 3007619, 21053333]

約数ペア:

[(1, 21053333), (7, 3007619), (29, 725977), (37, 569009), (203, 103711), (259, 81287), (1073, 19621), (2803, 7511)]