21490090

素因数分解:

$2^1\times 5^1\times {\mathrm{227}}^1\times {\mathrm{9467}}^1$

素因数の和:9701

約数の個数: 16

約数和(自身を含む): 38856672

約数和(自身を除く): 17366582

約数列:

[1, 2, 5, 10, 227, 454, 1135, 2270, 9467, 18934, 47335, 94670, 2149009, 4298018, 10745045, 21490090]

約数ペア:

[(1, 21490090), (2, 10745045), (5, 4298018), (10, 2149009), (227, 94670), (454, 47335), (1135, 18934), (2270, 9467)]