868660

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^2\times {\mathrm{257}}^1$

素因数の和:292

約数の個数: 36

約数和(自身を含む): 1982988

約数和(自身を除く): 1114328

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 169, 257, 260, 338, 514, 676, 845, 1028, 1285, 1690, 2570, 3341, 3380, 5140, 6682, 13364, 16705, 33410, 43433, 66820, 86866, 173732, 217165, 434330, 868660]

約数ペア:

[(1, 868660), (2, 434330), (4, 217165), (5, 173732), (10, 86866), (13, 66820), (20, 43433), (26, 33410), (52, 16705), (65, 13364), (130, 6682), (169, 5140), (257, 3380), (260, 3341), (338, 2570), (514, 1690), (676, 1285), (845, 1028)]