1340560

素因数分解:

$2^4\times 5^1\times {\mathrm{13}}^1\times {\mathrm{1289}}^1$

素因数の和:1315

約数の個数: 40

約数和(自身を含む): 3359160

約数和(自身を除く): 2018600

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 40, 52, 65, 80, 104, 130, 208, 260, 520, 1040, 1289, 2578, 5156, 6445, 10312, 12890, 16757, 20624, 25780, 33514, 51560, 67028, 83785, 103120, 134056, 167570, 268112, 335140, 670280, 1340560]

約数ペア:

[(1, 1340560), (2, 670280), (4, 335140), (5, 268112), (8, 167570), (10, 134056), (13, 103120), (16, 83785), (20, 67028), (26, 51560), (40, 33514), (52, 25780), (65, 20624), (80, 16757), (104, 12890), (130, 10312), (208, 6445), (260, 5156), (520, 2578), (1040, 1289)]