890990

素因数分解:

$2^1\times 5^1\times {\mathrm{139}}^1\times {\mathrm{641}}^1$

素因数の和:787

約数の個数: 16

約数和(自身を含む): 1617840

約数和(自身を除く): 726850

約数列:

[1, 2, 5, 10, 139, 278, 641, 695, 1282, 1390, 3205, 6410, 89099, 178198, 445495, 890990]

約数ペア:

[(1, 890990), (2, 445495), (5, 178198), (10, 89099), (139, 6410), (278, 3205), (641, 1390), (695, 1282)]