81966180

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{17}}^2\times {\mathrm{29}}^1\times {\mathrm{163}}^1$

素因数の和:238

約数の個数: 144

約数和(自身を含む): 253753920

約数和(自身を除く): 171787740

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 17, 20, 29, 30, 34, 51, 58, 60, 68, 85, 87, 102, 116, 145, 163, 170, 174, 204, 255, 289, 290, 326, 340, 348, 435, 489, 493, 510, 578, 580, 652, 815, 867, 870, 978, 986, 1020, 1156, 1445, 1479, 1630, 1734, 1740, 1956, 1972, 2445, 2465, 2771, 2890, 2958, 3260, 3468, 4335, 4727, 4890, 4930, 5542, 5780, 5916, 7395, 8313, 8381, 8670, 9454, 9780, 9860, 11084, 13855, 14181, 14790, 16626, 16762, 17340, 18908, 23635, 25143, 27710, 28362, 29580, 33252, 33524, 41565, 41905, 47107, 47270, 50286, 55420, 56724, 70905, 80359, 83130, 83810, 94214, 94540, 100572, 125715, 141321, 141810, 160718, 166260, 167620, 188428, 235535, 241077, 251430, 282642, 283620, 321436, 401795, 471070, 482154, 502860, 565284, 706605, 803590, 942140, 964308, 1205385, 1366103, 1413210, 1607180, 2410770, 2732206, 2826420, 4098309, 4821540, 5464412, 6830515, 8196618, 13661030, 16393236, 20491545, 27322060, 40983090, 81966180]

約数ペア:

[(1, 81966180), (2, 40983090), (3, 27322060), (4, 20491545), (5, 16393236), (6, 13661030), (10, 8196618), (12, 6830515), (15, 5464412), (17, 4821540), (20, 4098309), (29, 2826420), (30, 2732206), (34, 2410770), (51, 1607180), (58, 1413210), (60, 1366103), (68, 1205385), (85, 964308), (87, 942140), (102, 803590), (116, 706605), (145, 565284), (163, 502860), (170, 482154), (174, 471070), (204, 401795), (255, 321436), (289, 283620), (290, 282642), (326, 251430), (340, 241077), (348, 235535), (435, 188428), (489, 167620), (493, 166260), (510, 160718), (578, 141810), (580, 141321), (652, 125715), (815, 100572), (867, 94540), (870, 94214), (978, 83810), (986, 83130), (1020, 80359), (1156, 70905), (1445, 56724), (1479, 55420), (1630, 50286), (1734, 47270), (1740, 47107), (1956, 41905), (1972, 41565), (2445, 33524), (2465, 33252), (2771, 29580), (2890, 28362), (2958, 27710), (3260, 25143), (3468, 23635), (4335, 18908), (4727, 17340), (4890, 16762), (4930, 16626), (5542, 14790), (5780, 14181), (5916, 13855), (7395, 11084), (8313, 9860), (8381, 9780), (8670, 9454)]