21279402

素因数分解:

$2^1\times 3^3\times {\mathrm{394063}}^1$

素因数の和:394074

約数の個数: 16

約数和(自身を含む): 47287680

約数和(自身を除く): 26008278

約数列:

[1, 2, 3, 6, 9, 18, 27, 54, 394063, 788126, 1182189, 2364378, 3546567, 7093134, 10639701, 21279402]

約数ペア:

[(1, 21279402), (2, 10639701), (3, 7093134), (6, 3546567), (9, 2364378), (18, 1182189), (27, 788126), (54, 394063)]