21628959

素因数分解:

$3^1\times {\mathrm{11}}^1\times {\mathrm{163}}^1\times {\mathrm{4021}}^1$

素因数の和:4198

約数の個数: 16

約数和(自身を含む): 31661184

約数和(自身を除く): 10032225

約数列:

[1, 3, 11, 33, 163, 489, 1793, 4021, 5379, 12063, 44231, 132693, 655423, 1966269, 7209653, 21628959]

約数ペア:

[(1, 21628959), (3, 7209653), (11, 1966269), (33, 655423), (163, 132693), (489, 44231), (1793, 12063), (4021, 5379)]