20138559

素因数分解:

$3^1\times 7^3\times {\mathrm{19571}}^1$

素因数の和:19595

約数の個数: 16

約数和(自身を含む): 31315200

約数和(自身を除く): 11176641

約数列:

[1, 3, 7, 21, 49, 147, 343, 1029, 19571, 58713, 136997, 410991, 958979, 2876937, 6712853, 20138559]

約数ペア:

[(1, 20138559), (3, 6712853), (7, 2876937), (21, 958979), (49, 410991), (147, 136997), (343, 58713), (1029, 19571)]