21158795

素因数分解:

$5^1\times 7^1\times {\mathrm{17}}^1\times {\mathrm{43}}^1\times {\mathrm{827}}^1$

素因数の和:899

約数の個数: 32

約数和(自身を含む): 31477248

約数和(自身を除く): 10318453

約数列:

[1, 5, 7, 17, 35, 43, 85, 119, 215, 301, 595, 731, 827, 1505, 3655, 4135, 5117, 5789, 14059, 25585, 28945, 35561, 70295, 98413, 177805, 248927, 492065, 604537, 1244635, 3022685, 4231759, 21158795]

約数ペア:

[(1, 21158795), (5, 4231759), (7, 3022685), (17, 1244635), (35, 604537), (43, 492065), (85, 248927), (119, 177805), (215, 98413), (301, 70295), (595, 35561), (731, 28945), (827, 25585), (1505, 14059), (3655, 5789), (4135, 5117)]