21328184

素因数分解:

$2^3\times {\mathrm{19}}^1\times {\mathrm{140317}}^1$

素因数の和:140342

約数の個数: 16

約数和(自身を含む): 42095400

約数和(自身を除く): 20767216

約数列:

[1, 2, 4, 8, 19, 38, 76, 152, 140317, 280634, 561268, 1122536, 2666023, 5332046, 10664092, 21328184]

約数ペア:

[(1, 21328184), (2, 10664092), (4, 5332046), (8, 2666023), (19, 1122536), (38, 561268), (76, 280634), (152, 140317)]