18981207

素因数分解:

$3^2\times 7^1\times {\mathrm{31}}^1\times {\mathrm{9719}}^1$

素因数の和:9763

約数の個数: 24

約数和(自身を含む): 32348160

約数和(自身を除く): 13366953

約数列:

[1, 3, 7, 9, 21, 31, 63, 93, 217, 279, 651, 1953, 9719, 29157, 68033, 87471, 204099, 301289, 612297, 903867, 2109023, 2711601, 6327069, 18981207]

約数ペア:

[(1, 18981207), (3, 6327069), (7, 2711601), (9, 2109023), (21, 903867), (31, 612297), (63, 301289), (93, 204099), (217, 87471), (279, 68033), (651, 29157), (1953, 9719)]