21639906

素因数分解:

$2^1\times 3^3\times {\mathrm{400739}}^1$

素因数の和:400750

約数の個数: 16

約数和(自身を含む): 48088800

約数和(自身を除く): 26448894

約数列:

[1, 2, 3, 6, 9, 18, 27, 54, 400739, 801478, 1202217, 2404434, 3606651, 7213302, 10819953, 21639906]

約数ペア:

[(1, 21639906), (2, 10819953), (3, 7213302), (6, 3606651), (9, 2404434), (18, 1202217), (27, 801478), (54, 400739)]