20957656

素因数分解:

$2^3\times {\mathrm{523}}^1\times {\mathrm{5009}}^1$

素因数の和:5538

約数の個数: 16

約数和(自身を含む): 39378600

約数和(自身を除く): 18420944

約数列:

[1, 2, 4, 8, 523, 1046, 2092, 4184, 5009, 10018, 20036, 40072, 2619707, 5239414, 10478828, 20957656]

約数ペア:

[(1, 20957656), (2, 10478828), (4, 5239414), (8, 2619707), (523, 40072), (1046, 20036), (2092, 10018), (4184, 5009)]