20657581

素因数分解:

$7^1\times {\mathrm{37}}^1\times {\mathrm{47}}^1\times {\mathrm{1697}}^1$

素因数の和:1788

約数の個数: 16

約数和(自身を含む): 24777216

約数和(自身を除く): 4119635

約数列:

[1, 7, 37, 47, 259, 329, 1697, 1739, 11879, 12173, 62789, 79759, 439523, 558313, 2951083, 20657581]

約数ペア:

[(1, 20657581), (7, 2951083), (37, 558313), (47, 439523), (259, 79759), (329, 62789), (1697, 12173), (1739, 11879)]