201621755

素因数分解:

$5^1\times {\mathrm{101}}^1\times {\mathrm{157}}^1\times {\mathrm{2543}}^1$

素因数の和:2806

約数の個数: 16

約数和(自身を含む): 245994624

約数和(自身を除く): 44372869

約数列:

[1, 5, 101, 157, 505, 785, 2543, 12715, 15857, 79285, 256843, 399251, 1284215, 1996255, 40324351, 201621755]

約数ペア:

[(1, 201621755), (5, 40324351), (101, 1996255), (157, 1284215), (505, 399251), (785, 256843), (2543, 79285), (12715, 15857)]