19717980

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{328633}}^1$

素因数の和:328645

約数の個数: 24

約数和(自身を含む): 55210512

約数和(自身を除く): 35492532

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30, 60, 328633, 657266, 985899, 1314532, 1643165, 1971798, 3286330, 3943596, 4929495, 6572660, 9858990, 19717980]

約数ペア:

[(1, 19717980), (2, 9858990), (3, 6572660), (4, 4929495), (5, 3943596), (6, 3286330), (10, 1971798), (12, 1643165), (15, 1314532), (20, 985899), (30, 657266), (60, 328633)]