18736120

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{137}}^1\times {\mathrm{263}}^1$

素因数の和:424

約数の個数: 64

約数和(自身を含む): 45904320

約数和(自身を除く): 27168200

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 40, 52, 65, 104, 130, 137, 260, 263, 274, 520, 526, 548, 685, 1052, 1096, 1315, 1370, 1781, 2104, 2630, 2740, 3419, 3562, 5260, 5480, 6838, 7124, 8905, 10520, 13676, 14248, 17095, 17810, 27352, 34190, 35620, 36031, 68380, 71240, 72062, 136760, 144124, 180155, 288248, 360310, 468403, 720620, 936806, 1441240, 1873612, 2342015, 3747224, 4684030, 9368060, 18736120]

約数ペア:

[(1, 18736120), (2, 9368060), (4, 4684030), (5, 3747224), (8, 2342015), (10, 1873612), (13, 1441240), (20, 936806), (26, 720620), (40, 468403), (52, 360310), (65, 288248), (104, 180155), (130, 144124), (137, 136760), (260, 72062), (263, 71240), (274, 68380), (520, 36031), (526, 35620), (548, 34190), (685, 27352), (1052, 17810), (1096, 17095), (1315, 14248), (1370, 13676), (1781, 10520), (2104, 8905), (2630, 7124), (2740, 6838), (3419, 5480), (3562, 5260)]