273520

素因数分解:

$2^4\times 5^1\times {\mathrm{13}}^1\times {\mathrm{263}}^1$

素因数の和:289

約数の個数: 40

約数和(自身を含む): 687456

約数和(自身を除く): 413936

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 40, 52, 65, 80, 104, 130, 208, 260, 263, 520, 526, 1040, 1052, 1315, 2104, 2630, 3419, 4208, 5260, 6838, 10520, 13676, 17095, 21040, 27352, 34190, 54704, 68380, 136760, 273520]

約数ペア:

[(1, 273520), (2, 136760), (4, 68380), (5, 54704), (8, 34190), (10, 27352), (13, 21040), (16, 17095), (20, 13676), (26, 10520), (40, 6838), (52, 5260), (65, 4208), (80, 3419), (104, 2630), (130, 2104), (208, 1315), (260, 1052), (263, 1040), (520, 526)]