21056568

素因数分解:

$2^3\times 3^1\times {\mathrm{13}}^1\times {\mathrm{67489}}^1$

素因数の和:67511

約数の個数: 32

約数和(自身を含む): 56691600

約数和(自身を除く): 35635032

約数列:

[1, 2, 3, 4, 6, 8, 12, 13, 24, 26, 39, 52, 78, 104, 156, 312, 67489, 134978, 202467, 269956, 404934, 539912, 809868, 877357, 1619736, 1754714, 2632071, 3509428, 5264142, 7018856, 10528284, 21056568]

約数ペア:

[(1, 21056568), (2, 10528284), (3, 7018856), (4, 5264142), (6, 3509428), (8, 2632071), (12, 1754714), (13, 1619736), (24, 877357), (26, 809868), (39, 539912), (52, 404934), (78, 269956), (104, 202467), (156, 134978), (312, 67489)]