20999118

素因数分解:

$2^1\times 3^1\times 7^1\times {\mathrm{499979}}^1$

素因数の和:499991

約数の個数: 16

約数和(自身を含む): 47998080

約数和(自身を除く): 26998962

約数列:

[1, 2, 3, 6, 7, 14, 21, 42, 499979, 999958, 1499937, 2999874, 3499853, 6999706, 10499559, 20999118]

約数ペア:

[(1, 20999118), (2, 10499559), (3, 6999706), (6, 3499853), (7, 2999874), (14, 1499937), (21, 999958), (42, 499979)]