21053307

素因数分解:

$3^1\times {\mathrm{11}}^1\times {\mathrm{397}}^1\times {\mathrm{1607}}^1$

素因数の和:2018

約数の個数: 16

約数和(自身を含む): 30719232

約数和(自身を除く): 9665925

約数列:

[1, 3, 11, 33, 397, 1191, 1607, 4367, 4821, 13101, 17677, 53031, 637979, 1913937, 7017769, 21053307]

約数ペア:

[(1, 21053307), (3, 7017769), (11, 1913937), (33, 637979), (397, 53031), (1191, 17677), (1607, 13101), (4367, 4821)]