20890419

素因数分解:

$3^1\times {\mathrm{11}}^1\times {\mathrm{47}}^1\times {\mathrm{13469}}^1$

素因数の和:13530

約数の個数: 16

約数和(自身を含む): 31034880

約数和(自身を除く): 10144461

約数列:

[1, 3, 11, 33, 47, 141, 517, 1551, 13469, 40407, 148159, 444477, 633043, 1899129, 6963473, 20890419]

約数ペア:

[(1, 20890419), (3, 6963473), (11, 1899129), (33, 633043), (47, 444477), (141, 148159), (517, 40407), (1551, 13469)]