19801508

素因数分解:

$2^2\times {\mathrm{79}}^1\times {\mathrm{223}}^1\times {\mathrm{281}}^1$

素因数の和:587

約数の個数: 24

約数和(自身を含む): 35374080

約数和(自身を除く): 15572572

約数列:

[1, 2, 4, 79, 158, 223, 281, 316, 446, 562, 892, 1124, 17617, 22199, 35234, 44398, 62663, 70468, 88796, 125326, 250652, 4950377, 9900754, 19801508]

約数ペア:

[(1, 19801508), (2, 9900754), (4, 4950377), (79, 250652), (158, 125326), (223, 88796), (281, 70468), (316, 62663), (446, 44398), (562, 35234), (892, 22199), (1124, 17617)]