21770510

素因数分解:

$2^1\times 5^1\times {\mathrm{239}}^1\times {\mathrm{9109}}^1$

素因数の和:9355

約数の個数: 16

約数和(自身を含む): 39355200

約数和(自身を除く): 17584690

約数列:

[1, 2, 5, 10, 239, 478, 1195, 2390, 9109, 18218, 45545, 91090, 2177051, 4354102, 10885255, 21770510]

約数ペア:

[(1, 21770510), (2, 10885255), (5, 4354102), (10, 2177051), (239, 91090), (478, 45545), (1195, 18218), (2390, 9109)]