20421177

素因数分解:

$3^1\times 7^1\times {\mathrm{383}}^1\times {\mathrm{2539}}^1$

素因数の和:2932

約数の個数: 16

約数和(自身を含む): 31211520

約数和(自身を除く): 10790343

約数列:

[1, 3, 7, 21, 383, 1149, 2539, 2681, 7617, 8043, 17773, 53319, 972437, 2917311, 6807059, 20421177]

約数ペア:

[(1, 20421177), (3, 6807059), (7, 2917311), (21, 972437), (383, 53319), (1149, 17773), (2539, 8043), (2681, 7617)]