19640504

素因数分解:

$2^3\times {\mathrm{13}}^2\times {\mathrm{73}}^1\times {\mathrm{199}}^1$

素因数の和:304

約数の個数: 48

約数和(自身を含む): 40626000

約数和(自身を除く): 20985496

約数列:

[1, 2, 4, 8, 13, 26, 52, 73, 104, 146, 169, 199, 292, 338, 398, 584, 676, 796, 949, 1352, 1592, 1898, 2587, 3796, 5174, 7592, 10348, 12337, 14527, 20696, 24674, 29054, 33631, 49348, 58108, 67262, 98696, 116216, 134524, 188851, 269048, 377702, 755404, 1510808, 2455063, 4910126, 9820252, 19640504]

約数ペア:

[(1, 19640504), (2, 9820252), (4, 4910126), (8, 2455063), (13, 1510808), (26, 755404), (52, 377702), (73, 269048), (104, 188851), (146, 134524), (169, 116216), (199, 98696), (292, 67262), (338, 58108), (398, 49348), (584, 33631), (676, 29054), (796, 24674), (949, 20696), (1352, 14527), (1592, 12337), (1898, 10348), (2587, 7592), (3796, 5174)]