20015205

素因数分解:

$3^1\times 5^1\times 7^1\times {\mathrm{17}}^1\times {\mathrm{11213}}^1$

素因数の和:11245

約数の個数: 32

約数和(自身を含む): 38755584

約数和(自身を除く): 18740379

約数列:

[1, 3, 5, 7, 15, 17, 21, 35, 51, 85, 105, 119, 255, 357, 595, 1785, 11213, 33639, 56065, 78491, 168195, 190621, 235473, 392455, 571863, 953105, 1177365, 1334347, 2859315, 4003041, 6671735, 20015205]

約数ペア:

[(1, 20015205), (3, 6671735), (5, 4003041), (7, 2859315), (15, 1334347), (17, 1177365), (21, 953105), (35, 571863), (51, 392455), (85, 235473), (105, 190621), (119, 168195), (255, 78491), (357, 56065), (595, 33639), (1785, 11213)]