20720079

素因数分解:

$3^2\times {\mathrm{23}}^1\times {\mathrm{199}}^1\times {\mathrm{503}}^1$

素因数の和:731

約数の個数: 24

約数和(自身を含む): 31449600

約数和(自身を除く): 10729521

約数列:

[1, 3, 9, 23, 69, 199, 207, 503, 597, 1509, 1791, 4527, 4577, 11569, 13731, 34707, 41193, 100097, 104121, 300291, 900873, 2302231, 6906693, 20720079]

約数ペア:

[(1, 20720079), (3, 6906693), (9, 2302231), (23, 900873), (69, 300291), (199, 104121), (207, 100097), (503, 41193), (597, 34707), (1509, 13731), (1791, 11569), (4527, 4577)]