20347912

素因数分解:

$2^3\times {\mathrm{13}}^1\times {\mathrm{17}}^2\times {\mathrm{677}}^1$

素因数の和:730

約数の個数: 48

約数和(自身を含む): 43710660

約数和(自身を除く): 23362748

約数列:

[1, 2, 4, 8, 13, 17, 26, 34, 52, 68, 104, 136, 221, 289, 442, 578, 677, 884, 1156, 1354, 1768, 2312, 2708, 3757, 5416, 7514, 8801, 11509, 15028, 17602, 23018, 30056, 35204, 46036, 70408, 92072, 149617, 195653, 299234, 391306, 598468, 782612, 1196936, 1565224, 2543489, 5086978, 10173956, 20347912]

約数ペア:

[(1, 20347912), (2, 10173956), (4, 5086978), (8, 2543489), (13, 1565224), (17, 1196936), (26, 782612), (34, 598468), (52, 391306), (68, 299234), (104, 195653), (136, 149617), (221, 92072), (289, 70408), (442, 46036), (578, 35204), (677, 30056), (884, 23018), (1156, 17602), (1354, 15028), (1768, 11509), (2312, 8801), (2708, 7514), (3757, 5416)]