20139255

素因数分解:

$3^2\times 5^1\times {\mathrm{521}}^1\times {\mathrm{859}}^1$

素因数の和:1391

約数の個数: 24

約数和(自身を含む): 35015760

約数和(自身を除く): 14876505

約数列:

[1, 3, 5, 9, 15, 45, 521, 859, 1563, 2577, 2605, 4295, 4689, 7731, 7815, 12885, 23445, 38655, 447539, 1342617, 2237695, 4027851, 6713085, 20139255]

約数ペア:

[(1, 20139255), (3, 6713085), (5, 4027851), (9, 2237695), (15, 1342617), (45, 447539), (521, 38655), (859, 23445), (1563, 12885), (2577, 7815), (2605, 7731), (4295, 4689)]