20908707

素因数分解:

$3^1\times {\mathrm{43}}^1\times {\mathrm{109}}^1\times {\mathrm{1487}}^1$

素因数の和:1642

約数の個数: 16

約数和(自身を含む): 28807680

約数和(自身を除く): 7898973

約数列:

[1, 3, 43, 109, 129, 327, 1487, 4461, 4687, 14061, 63941, 162083, 191823, 486249, 6969569, 20908707]

約数ペア:

[(1, 20908707), (3, 6969569), (43, 486249), (109, 191823), (129, 162083), (327, 63941), (1487, 14061), (4461, 4687)]