21379533

素因数分解:

$3^1\times 7^3\times {\mathrm{79}}^1\times {\mathrm{263}}^1$

素因数の和:366

約数の個数: 32

約数和(自身を含む): 33792000

約数和(自身を除く): 12412467

約数列:

[1, 3, 7, 21, 49, 79, 147, 237, 263, 343, 553, 789, 1029, 1659, 1841, 3871, 5523, 11613, 12887, 20777, 27097, 38661, 62331, 81291, 90209, 145439, 270627, 436317, 1018073, 3054219, 7126511, 21379533]

約数ペア:

[(1, 21379533), (3, 7126511), (7, 3054219), (21, 1018073), (49, 436317), (79, 270627), (147, 145439), (237, 90209), (263, 81291), (343, 62331), (553, 38661), (789, 27097), (1029, 20777), (1659, 12887), (1841, 11613), (3871, 5523)]