19657980

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{109211}}^1$

素因数の和:109226

約数の個数: 36

約数和(自身を含む): 59629752

約数和(自身を除く): 39971772

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 45, 60, 90, 180, 109211, 218422, 327633, 436844, 546055, 655266, 982899, 1092110, 1310532, 1638165, 1965798, 2184220, 3276330, 3931596, 4914495, 6552660, 9828990, 19657980]

約数ペア:

[(1, 19657980), (2, 9828990), (3, 6552660), (4, 4914495), (5, 3931596), (6, 3276330), (9, 2184220), (10, 1965798), (12, 1638165), (15, 1310532), (18, 1092110), (20, 982899), (30, 655266), (36, 546055), (45, 436844), (60, 327633), (90, 218422), (180, 109211)]