21528770

素因数分解:

$2^1\times 5^1\times {\mathrm{661}}^1\times {\mathrm{3257}}^1$

素因数の和:3925

約数の個数: 16

約数和(自身を含む): 38822328

約数和(自身を除く): 17293558

約数列:

[1, 2, 5, 10, 661, 1322, 3257, 3305, 6514, 6610, 16285, 32570, 2152877, 4305754, 10764385, 21528770]

約数ペア:

[(1, 21528770), (2, 10764385), (5, 4305754), (10, 2152877), (661, 32570), (1322, 16285), (3257, 6610), (3305, 6514)]