20989635

素因数分解:

$3^1\times 5^1\times {\mathrm{31}}^1\times {\mathrm{45139}}^1$

素因数の和:45178

約数の個数: 16

約数和(自身を含む): 34667520

約数和(自身を除く): 13677885

約数列:

[1, 3, 5, 15, 31, 93, 155, 465, 45139, 135417, 225695, 677085, 1399309, 4197927, 6996545, 20989635]

約数ペア:

[(1, 20989635), (3, 6996545), (5, 4197927), (15, 1399309), (31, 677085), (93, 225695), (155, 135417), (465, 45139)]