19721220

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{328687}}^1$

素因数の和:328699

約数の個数: 24

約数和(自身を含む): 55219584

約数和(自身を除く): 35498364

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30, 60, 328687, 657374, 986061, 1314748, 1643435, 1972122, 3286870, 3944244, 4930305, 6573740, 9860610, 19721220]

約数ペア:

[(1, 19721220), (2, 9860610), (3, 6573740), (4, 4930305), (5, 3944244), (6, 3286870), (10, 1972122), (12, 1643435), (15, 1314748), (20, 986061), (30, 657374), (60, 328687)]