18916980

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{103}}^1\times {\mathrm{3061}}^1$

素因数の和:3176

約数の個数: 48

約数和(自身を含む): 53499264

約数和(自身を除く): 34582284

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30, 60, 103, 206, 309, 412, 515, 618, 1030, 1236, 1545, 2060, 3061, 3090, 6122, 6180, 9183, 12244, 15305, 18366, 30610, 36732, 45915, 61220, 91830, 183660, 315283, 630566, 945849, 1261132, 1576415, 1891698, 3152830, 3783396, 4729245, 6305660, 9458490, 18916980]

約数ペア:

[(1, 18916980), (2, 9458490), (3, 6305660), (4, 4729245), (5, 3783396), (6, 3152830), (10, 1891698), (12, 1576415), (15, 1261132), (20, 945849), (30, 630566), (60, 315283), (103, 183660), (206, 91830), (309, 61220), (412, 45915), (515, 36732), (618, 30610), (1030, 18366), (1236, 15305), (1545, 12244), (2060, 9183), (3061, 6180), (3090, 6122)]