21217186

素因数分解:

$2^1\times {\mathrm{19}}^1\times {\mathrm{281}}^1\times {\mathrm{1987}}^1$

素因数の和:2289

約数の個数: 16

約数和(自身を含む): 33636960

約数和(自身を除く): 12419774

約数列:

[1, 2, 19, 38, 281, 562, 1987, 3974, 5339, 10678, 37753, 75506, 558347, 1116694, 10608593, 21217186]

約数ペア:

[(1, 21217186), (2, 10608593), (19, 1116694), (38, 558347), (281, 75506), (562, 37753), (1987, 10678), (3974, 5339)]