81336160

素因数分解:

$2^5\times 5^1\times {\mathrm{17}}^2\times {\mathrm{1759}}^1$

素因数の和:1808

約数の個数: 72

約数和(自身を含む): 204240960

約数和(自身を除く): 122904800

約数列:

[1, 2, 4, 5, 8, 10, 16, 17, 20, 32, 34, 40, 68, 80, 85, 136, 160, 170, 272, 289, 340, 544, 578, 680, 1156, 1360, 1445, 1759, 2312, 2720, 2890, 3518, 4624, 5780, 7036, 8795, 9248, 11560, 14072, 17590, 23120, 28144, 29903, 35180, 46240, 56288, 59806, 70360, 119612, 140720, 149515, 239224, 281440, 299030, 478448, 508351, 598060, 956896, 1016702, 1196120, 2033404, 2392240, 2541755, 4066808, 4784480, 5083510, 8133616, 10167020, 16267232, 20334040, 40668080, 81336160]

約数ペア:

[(1, 81336160), (2, 40668080), (4, 20334040), (5, 16267232), (8, 10167020), (10, 8133616), (16, 5083510), (17, 4784480), (20, 4066808), (32, 2541755), (34, 2392240), (40, 2033404), (68, 1196120), (80, 1016702), (85, 956896), (136, 598060), (160, 508351), (170, 478448), (272, 299030), (289, 281440), (340, 239224), (544, 149515), (578, 140720), (680, 119612), (1156, 70360), (1360, 59806), (1445, 56288), (1759, 46240), (2312, 35180), (2720, 29903), (2890, 28144), (3518, 23120), (4624, 17590), (5780, 14072), (7036, 11560), (8795, 9248)]