31517280

素因数分解:

$2^5\times 3^2\times 5^1\times {\mathrm{43}}^1\times {\mathrm{509}}^1$

素因数の和:573

約数の個数: 144

約数和(自身を含む): 110270160

約数和(自身を除く): 78752880

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 16, 18, 20, 24, 30, 32, 36, 40, 43, 45, 48, 60, 72, 80, 86, 90, 96, 120, 129, 144, 160, 172, 180, 215, 240, 258, 288, 344, 360, 387, 430, 480, 509, 516, 645, 688, 720, 774, 860, 1018, 1032, 1290, 1376, 1440, 1527, 1548, 1720, 1935, 2036, 2064, 2545, 2580, 3054, 3096, 3440, 3870, 4072, 4128, 4581, 5090, 5160, 6108, 6192, 6880, 7635, 7740, 8144, 9162, 10180, 10320, 12216, 12384, 15270, 15480, 16288, 18324, 20360, 20640, 21887, 22905, 24432, 30540, 30960, 36648, 40720, 43774, 45810, 48864, 61080, 61920, 65661, 73296, 81440, 87548, 91620, 109435, 122160, 131322, 146592, 175096, 183240, 196983, 218870, 244320, 262644, 328305, 350192, 366480, 393966, 437740, 525288, 656610, 700384, 732960, 787932, 875480, 984915, 1050576, 1313220, 1575864, 1750960, 1969830, 2101152, 2626440, 3151728, 3501920, 3939660, 5252880, 6303456, 7879320, 10505760, 15758640, 31517280]

約数ペア:

[(1, 31517280), (2, 15758640), (3, 10505760), (4, 7879320), (5, 6303456), (6, 5252880), (8, 3939660), (9, 3501920), (10, 3151728), (12, 2626440), (15, 2101152), (16, 1969830), (18, 1750960), (20, 1575864), (24, 1313220), (30, 1050576), (32, 984915), (36, 875480), (40, 787932), (43, 732960), (45, 700384), (48, 656610), (60, 525288), (72, 437740), (80, 393966), (86, 366480), (90, 350192), (96, 328305), (120, 262644), (129, 244320), (144, 218870), (160, 196983), (172, 183240), (180, 175096), (215, 146592), (240, 131322), (258, 122160), (288, 109435), (344, 91620), (360, 87548), (387, 81440), (430, 73296), (480, 65661), (509, 61920), (516, 61080), (645, 48864), (688, 45810), (720, 43774), (774, 40720), (860, 36648), (1018, 30960), (1032, 30540), (1290, 24432), (1376, 22905), (1440, 21887), (1527, 20640), (1548, 20360), (1720, 18324), (1935, 16288), (2036, 15480), (2064, 15270), (2545, 12384), (2580, 12216), (3054, 10320), (3096, 10180), (3440, 9162), (3870, 8144), (4072, 7740), (4128, 7635), (4581, 6880), (5090, 6192), (5160, 6108)]