21788871

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{47}}^1\times {\mathrm{11887}}^1$

素因数の和:11950

約数の個数: 16

約数和(自身を含む): 31954944

約数和(自身を除く): 10166073

約数列:

[1, 3, 13, 39, 47, 141, 611, 1833, 11887, 35661, 154531, 463593, 558689, 1676067, 7262957, 21788871]

約数ペア:

[(1, 21788871), (3, 7262957), (13, 1676067), (39, 558689), (47, 463593), (141, 154531), (611, 35661), (1833, 11887)]