21785205

素因数分解:

$3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{47}}^1\times {\mathrm{2377}}^1$

素因数の和:2445

約数の個数: 32

約数和(自身を含む): 38352384

約数和(自身を除く): 16567179

約数列:

[1, 3, 5, 13, 15, 39, 47, 65, 141, 195, 235, 611, 705, 1833, 2377, 3055, 7131, 9165, 11885, 30901, 35655, 92703, 111719, 154505, 335157, 463515, 558595, 1452347, 1675785, 4357041, 7261735, 21785205]

約数ペア:

[(1, 21785205), (3, 7261735), (5, 4357041), (13, 1675785), (15, 1452347), (39, 558595), (47, 463515), (65, 335157), (141, 154505), (195, 111719), (235, 92703), (611, 35655), (705, 30901), (1833, 11885), (2377, 9165), (3055, 7131)]