21239128

素因数分解:

$2^3\times {\mathrm{619}}^1\times {\mathrm{4289}}^1$

素因数の和:4914

約数の個数: 16

約数和(自身を含む): 39897000

約数和(自身を除く): 18657872

約数列:

[1, 2, 4, 8, 619, 1238, 2476, 4289, 4952, 8578, 17156, 34312, 2654891, 5309782, 10619564, 21239128]

約数ペア:

[(1, 21239128), (2, 10619564), (4, 5309782), (8, 2654891), (619, 34312), (1238, 17156), (2476, 8578), (4289, 4952)]