12840875

素因数分解:

$5^3\times {\mathrm{43}}^1\times {\mathrm{2389}}^1$

素因数の和:2447

約数の個数: 16

約数和(自身を含む): 16404960

約数和(自身を除く): 3564085

約数列:

[1, 5, 25, 43, 125, 215, 1075, 2389, 5375, 11945, 59725, 102727, 298625, 513635, 2568175, 12840875]

約数ペア:

[(1, 12840875), (5, 2568175), (25, 513635), (43, 298625), (125, 102727), (215, 59725), (1075, 11945), (2389, 5375)]