12921765

素因数分解:

$3^1\times 5^1\times {\mathrm{41}}^1\times {\mathrm{21011}}^1$

素因数の和:21060

約数の個数: 16

約数和(自身を含む): 21180096

約数和(自身を除く): 8258331

約数列:

[1, 3, 5, 15, 41, 123, 205, 615, 21011, 63033, 105055, 315165, 861451, 2584353, 4307255, 12921765]

約数ペア:

[(1, 12921765), (3, 4307255), (5, 2584353), (15, 861451), (41, 315165), (123, 105055), (205, 63033), (615, 21011)]