8713640

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^2\times {\mathrm{1289}}^1$

素因数の和:1326

約数の個数: 48

約数和(自身を含む): 21246300

約数和(自身を除く): 12532660

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 40, 52, 65, 104, 130, 169, 260, 338, 520, 676, 845, 1289, 1352, 1690, 2578, 3380, 5156, 6445, 6760, 10312, 12890, 16757, 25780, 33514, 51560, 67028, 83785, 134056, 167570, 217841, 335140, 435682, 670280, 871364, 1089205, 1742728, 2178410, 4356820, 8713640]

約数ペア:

[(1, 8713640), (2, 4356820), (4, 2178410), (5, 1742728), (8, 1089205), (10, 871364), (13, 670280), (20, 435682), (26, 335140), (40, 217841), (52, 167570), (65, 134056), (104, 83785), (130, 67028), (169, 51560), (260, 33514), (338, 25780), (520, 16757), (676, 12890), (845, 10312), (1289, 6760), (1352, 6445), (1690, 5156), (2578, 3380)]