20592520

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{199}}^2$

素因数の和:422

約数の個数: 48

約数和(自身を含む): 50149260

約数和(自身を除く): 29556740

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 40, 52, 65, 104, 130, 199, 260, 398, 520, 796, 995, 1592, 1990, 2587, 3980, 5174, 7960, 10348, 12935, 20696, 25870, 39601, 51740, 79202, 103480, 158404, 198005, 316808, 396010, 514813, 792020, 1029626, 1584040, 2059252, 2574065, 4118504, 5148130, 10296260, 20592520]

約数ペア:

[(1, 20592520), (2, 10296260), (4, 5148130), (5, 4118504), (8, 2574065), (10, 2059252), (13, 1584040), (20, 1029626), (26, 792020), (40, 514813), (52, 396010), (65, 316808), (104, 198005), (130, 158404), (199, 103480), (260, 79202), (398, 51740), (520, 39601), (796, 25870), (995, 20696), (1592, 12935), (1990, 10348), (2587, 7960), (3980, 5174)]