21014907

素因数分解:

$3^1\times {\mathrm{17}}^1\times {\mathrm{107}}^1\times {\mathrm{3851}}^1$

素因数の和:3978

約数の個数: 16

約数和(自身を含む): 29953152

約数和(自身を除く): 8938245

約数列:

[1, 3, 17, 51, 107, 321, 1819, 3851, 5457, 11553, 65467, 196401, 412057, 1236171, 7004969, 21014907]

約数ペア:

[(1, 21014907), (3, 7004969), (17, 1236171), (51, 412057), (107, 196401), (321, 65467), (1819, 11553), (3851, 5457)]