28776140

素因数分解:

$2^2\times 5^1\times {\mathrm{61}}^1\times {\mathrm{103}}^1\times {\mathrm{229}}^1$

素因数の和:402

約数の個数: 48

約数和(自身を含む): 62287680

約数和(自身を除く): 33511540

約数列:

[1, 2, 4, 5, 10, 20, 61, 103, 122, 206, 229, 244, 305, 412, 458, 515, 610, 916, 1030, 1145, 1220, 2060, 2290, 4580, 6283, 12566, 13969, 23587, 25132, 27938, 31415, 47174, 55876, 62830, 69845, 94348, 117935, 125660, 139690, 235870, 279380, 471740, 1438807, 2877614, 5755228, 7194035, 14388070, 28776140]

約数ペア:

[(1, 28776140), (2, 14388070), (4, 7194035), (5, 5755228), (10, 2877614), (20, 1438807), (61, 471740), (103, 279380), (122, 235870), (206, 139690), (229, 125660), (244, 117935), (305, 94348), (412, 69845), (458, 62830), (515, 55876), (610, 47174), (916, 31415), (1030, 27938), (1145, 25132), (1220, 23587), (2060, 13969), (2290, 12566), (4580, 6283)]