20666568

素因数分解:

$2^3\times 3^1\times {\mathrm{13}}^1\times {\mathrm{66239}}^1$

素因数の和:66261

約数の個数: 32

約数和(自身を含む): 55641600

約数和(自身を除く): 34975032

約数列:

[1, 2, 3, 4, 6, 8, 12, 13, 24, 26, 39, 52, 78, 104, 156, 312, 66239, 132478, 198717, 264956, 397434, 529912, 794868, 861107, 1589736, 1722214, 2583321, 3444428, 5166642, 6888856, 10333284, 20666568]

約数ペア:

[(1, 20666568), (2, 10333284), (3, 6888856), (4, 5166642), (6, 3444428), (8, 2583321), (12, 1722214), (13, 1589736), (24, 861107), (26, 794868), (39, 529912), (52, 397434), (78, 264956), (104, 198717), (156, 132478), (312, 66239)]