9997220

素因数分解:

$2^2\times 5^1\times {\mathrm{313}}^1\times {\mathrm{1597}}^1$

素因数の和:1919

約数の個数: 24

約数和(自身を含む): 21074424

約数和(自身を除く): 11077204

約数列:

[1, 2, 4, 5, 10, 20, 313, 626, 1252, 1565, 1597, 3130, 3194, 6260, 6388, 7985, 15970, 31940, 499861, 999722, 1999444, 2499305, 4998610, 9997220]

約数ペア:

[(1, 9997220), (2, 4998610), (4, 2499305), (5, 1999444), (10, 999722), (20, 499861), (313, 31940), (626, 15970), (1252, 7985), (1565, 6388), (1597, 6260), (3130, 3194)]