20988618

素因数分解:

$2^1\times 3^1\times 7^1\times {\mathrm{499729}}^1$

素因数の和:499741

約数の個数: 16

約数和(自身を含む): 47974080

約数和(自身を除く): 26985462

約数列:

[1, 2, 3, 6, 7, 14, 21, 42, 499729, 999458, 1499187, 2998374, 3498103, 6996206, 10494309, 20988618]

約数ペア:

[(1, 20988618), (2, 10494309), (3, 6996206), (6, 3498103), (7, 2998374), (14, 1499187), (21, 999458), (42, 499729)]