20664903

素因数分解:

$3^1\times 7^1\times {\mathrm{101}}^1\times {\mathrm{9743}}^1$

素因数の和:9854

約数の個数: 16

約数和(自身を含む): 31804416

約数和(自身を除く): 11139513

約数列:

[1, 3, 7, 21, 101, 303, 707, 2121, 9743, 29229, 68201, 204603, 984043, 2952129, 6888301, 20664903]

約数ペア:

[(1, 20664903), (3, 6888301), (7, 2952129), (21, 984043), (101, 204603), (303, 68201), (707, 29229), (2121, 9743)]