20087020

素因数分解:

$2^2\times 5^1\times {\mathrm{43}}^1\times {\mathrm{23357}}^1$

素因数の和:23409

約数の個数: 24

約数和(自身を含む): 43165584

約数和(自身を除く): 23078564

約数列:

[1, 2, 4, 5, 10, 20, 43, 86, 172, 215, 430, 860, 23357, 46714, 93428, 116785, 233570, 467140, 1004351, 2008702, 4017404, 5021755, 10043510, 20087020]

約数ペア:

[(1, 20087020), (2, 10043510), (4, 5021755), (5, 4017404), (10, 2008702), (20, 1004351), (43, 467140), (86, 233570), (172, 116785), (215, 93428), (430, 46714), (860, 23357)]