20864335

素因数分解:

$5^1\times {\mathrm{23}}^1\times {\mathrm{397}}^1\times {\mathrm{457}}^1$

素因数の和:882

約数の個数: 16

約数和(自身を含む): 26248896

約数和(自身を除く): 5384561

約数列:

[1, 5, 23, 115, 397, 457, 1985, 2285, 9131, 10511, 45655, 52555, 181429, 907145, 4172867, 20864335]

約数ペア:

[(1, 20864335), (5, 4172867), (23, 907145), (115, 181429), (397, 52555), (457, 45655), (1985, 10511), (2285, 9131)]