15781980

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{37}}^1\times {\mathrm{7109}}^1$

素因数の和:7158

約数の個数: 48

約数和(自身を含む): 45390240

約数和(自身を除く): 29608260

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30, 37, 60, 74, 111, 148, 185, 222, 370, 444, 555, 740, 1110, 2220, 7109, 14218, 21327, 28436, 35545, 42654, 71090, 85308, 106635, 142180, 213270, 263033, 426540, 526066, 789099, 1052132, 1315165, 1578198, 2630330, 3156396, 3945495, 5260660, 7890990, 15781980]

約数ペア:

[(1, 15781980), (2, 7890990), (3, 5260660), (4, 3945495), (5, 3156396), (6, 2630330), (10, 1578198), (12, 1315165), (15, 1052132), (20, 789099), (30, 526066), (37, 426540), (60, 263033), (74, 213270), (111, 142180), (148, 106635), (185, 85308), (222, 71090), (370, 42654), (444, 35545), (555, 28436), (740, 21327), (1110, 14218), (2220, 7109)]