20347815

素因数分解:

$3^1\times 5^1\times {\mathrm{43}}^1\times {\mathrm{31547}}^1$

素因数の和:31598

約数の個数: 16

約数和(自身を含む): 33314688

約数和(自身を除く): 12966873

約数列:

[1, 3, 5, 15, 43, 129, 215, 645, 31547, 94641, 157735, 473205, 1356521, 4069563, 6782605, 20347815]

約数ペア:

[(1, 20347815), (3, 6782605), (5, 4069563), (15, 1356521), (43, 473205), (129, 157735), (215, 94641), (645, 31547)]