21553653

素因数分解:

$3^1\times {\mathrm{11}}^1\times {\mathrm{163}}^1\times {\mathrm{4007}}^1$

素因数の和:4184

約数の個数: 16

約数和(自身を含む): 31550976

約数和(自身を除く): 9997323

約数列:

[1, 3, 11, 33, 163, 489, 1793, 4007, 5379, 12021, 44077, 132231, 653141, 1959423, 7184551, 21553653]

約数ペア:

[(1, 21553653), (3, 7184551), (11, 1959423), (33, 653141), (163, 132231), (489, 44077), (1793, 12021), (4007, 5379)]