20447645

素因数分解:

$5^1\times {\mathrm{71}}^1\times {\mathrm{239}}^1\times {\mathrm{241}}^1$

素因数の和:556

約数の個数: 16

約数和(自身を含む): 25090560

約数和(自身を除く): 4642915

約数列:

[1, 5, 71, 239, 241, 355, 1195, 1205, 16969, 17111, 57599, 84845, 85555, 287995, 4089529, 20447645]

約数ペア:

[(1, 20447645), (5, 4089529), (71, 287995), (239, 85555), (241, 84845), (355, 57599), (1195, 17111), (1205, 16969)]