20657589

素因数分解:

$3^1\times {\mathrm{61}}^1\times {\mathrm{157}}^1\times {\mathrm{719}}^1$

素因数の和:940

約数の個数: 16

約数和(自身を含む): 28212480

約数和(自身を除く): 7554891

約数列:

[1, 3, 61, 157, 183, 471, 719, 2157, 9577, 28731, 43859, 112883, 131577, 338649, 6885863, 20657589]

約数ペア:

[(1, 20657589), (3, 6885863), (61, 338649), (157, 131577), (183, 112883), (471, 43859), (719, 28731), (2157, 9577)]