19813980

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{330233}}^1$

素因数の和:330245

約数の個数: 24

約数和(自身を含む): 55479312

約数和(自身を除く): 35665332

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30, 60, 330233, 660466, 990699, 1320932, 1651165, 1981398, 3302330, 3962796, 4953495, 6604660, 9906990, 19813980]

約数ペア:

[(1, 19813980), (2, 9906990), (3, 6604660), (4, 4953495), (5, 3962796), (6, 3302330), (10, 1981398), (12, 1651165), (15, 1320932), (20, 990699), (30, 660466), (60, 330233)]