20012853

素因数分解:

$3^1\times 7^1\times {\mathrm{53}}^1\times {\mathrm{17981}}^1$

素因数の和:18044

約数の個数: 16

約数和(自身を含む): 31072896

約数和(自身を除く): 11060043

約数列:

[1, 3, 7, 21, 53, 159, 371, 1113, 17981, 53943, 125867, 377601, 952993, 2858979, 6670951, 20012853]

約数ペア:

[(1, 20012853), (3, 6670951), (7, 2858979), (21, 952993), (53, 377601), (159, 125867), (371, 53943), (1113, 17981)]