664754990

素因数分解:

$2^1\times 5^1\times {\mathrm{139}}^1\times {\mathrm{478241}}^1$

素因数の和:478387

約数の個数: 16

約数和(自身を含む): 1205169840

約数和(自身を除く): 540414850

約数列:

[1, 2, 5, 10, 139, 278, 695, 1390, 478241, 956482, 2391205, 4782410, 66475499, 132950998, 332377495, 664754990]

約数ペア:

[(1, 664754990), (2, 332377495), (5, 132950998), (10, 66475499), (139, 4782410), (278, 2391205), (695, 956482), (1390, 478241)]