28251013

素因数分解:

$7^1\times {\mathrm{31}}^1\times {\mathrm{101}}^1\times {\mathrm{1289}}^1$

素因数の和:1428

約数の個数: 16

約数和(自身を含む): 33684480

約数和(自身を除く): 5433467

約数列:

[1, 7, 31, 101, 217, 707, 1289, 3131, 9023, 21917, 39959, 130189, 279713, 911323, 4035859, 28251013]

約数ペア:

[(1, 28251013), (7, 4035859), (31, 911323), (101, 279713), (217, 130189), (707, 39959), (1289, 21917), (3131, 9023)]