19878660

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{110437}}^1$

素因数の和:110452

約数の個数: 36

約数和(自身を含む): 60299148

約数和(自身を除く): 40420488

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 45, 60, 90, 180, 110437, 220874, 331311, 441748, 552185, 662622, 993933, 1104370, 1325244, 1656555, 1987866, 2208740, 3313110, 3975732, 4969665, 6626220, 9939330, 19878660]

約数ペア:

[(1, 19878660), (2, 9939330), (3, 6626220), (4, 4969665), (5, 3975732), (6, 3313110), (9, 2208740), (10, 1987866), (12, 1656555), (15, 1325244), (18, 1104370), (20, 993933), (30, 662622), (36, 552185), (45, 441748), (60, 331311), (90, 220874), (180, 110437)]