2180990

素因数分解:

$2^1\times 5^1\times 7^2\times {\mathrm{4451}}^1$

素因数の和:4472

約数の個数: 24

約数和(自身を含む): 4567752

約数和(自身を除く): 2386762

約数列:

[1, 2, 5, 7, 10, 14, 35, 49, 70, 98, 245, 490, 4451, 8902, 22255, 31157, 44510, 62314, 155785, 218099, 311570, 436198, 1090495, 2180990]

約数ペア:

[(1, 2180990), (2, 1090495), (5, 436198), (7, 311570), (10, 218099), (14, 155785), (35, 62314), (49, 44510), (70, 31157), (98, 22255), (245, 8902), (490, 4451)]