31212720

素因数分解:

$2^4\times 3^2\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{563}}^1$

素因数の和:600

約数の個数: 240

約数和(自身を含む): 130920192

約数和(自身を除く): 99707472

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 14, 15, 16, 18, 20, 21, 22, 24, 28, 30, 33, 35, 36, 40, 42, 44, 45, 48, 55, 56, 60, 63, 66, 70, 72, 77, 80, 84, 88, 90, 99, 105, 110, 112, 120, 126, 132, 140, 144, 154, 165, 168, 176, 180, 198, 210, 220, 231, 240, 252, 264, 280, 308, 315, 330, 336, 360, 385, 396, 420, 440, 462, 495, 504, 528, 560, 563, 616, 630, 660, 693, 720, 770, 792, 840, 880, 924, 990, 1008, 1126, 1155, 1232, 1260, 1320, 1386, 1540, 1584, 1680, 1689, 1848, 1980, 2252, 2310, 2520, 2640, 2772, 2815, 3080, 3378, 3465, 3696, 3941, 3960, 4504, 4620, 5040, 5067, 5544, 5630, 6160, 6193, 6756, 6930, 7882, 7920, 8445, 9008, 9240, 10134, 11088, 11260, 11823, 12386, 13512, 13860, 15764, 16890, 18480, 18579, 19705, 20268, 22520, 23646, 24772, 25335, 27024, 27720, 30965, 31528, 33780, 35469, 37158, 39410, 40536, 43351, 45040, 47292, 49544, 50670, 55440, 55737, 59115, 61930, 63056, 67560, 70938, 74316, 78820, 81072, 86702, 92895, 94584, 99088, 101340, 111474, 118230, 123860, 130053, 135120, 141876, 148632, 157640, 173404, 177345, 185790, 189168, 202680, 216755, 222948, 236460, 247720, 260106, 278685, 283752, 297264, 315280, 346808, 354690, 371580, 390159, 405360, 433510, 445896, 472920, 495440, 520212, 557370, 567504, 650265, 693616, 709380, 743160, 780318, 867020, 891792, 945840, 1040424, 1114740, 1300530, 1418760, 1486320, 1560636, 1734040, 1950795, 2080848, 2229480, 2601060, 2837520, 3121272, 3468080, 3901590, 4458960, 5202120, 6242544, 7803180, 10404240, 15606360, 31212720]

約数ペア:

[(1, 31212720), (2, 15606360), (3, 10404240), (4, 7803180), (5, 6242544), (6, 5202120), (7, 4458960), (8, 3901590), (9, 3468080), (10, 3121272), (11, 2837520), (12, 2601060), (14, 2229480), (15, 2080848), (16, 1950795), (18, 1734040), (20, 1560636), (21, 1486320), (22, 1418760), (24, 1300530), (28, 1114740), (30, 1040424), (33, 945840), (35, 891792), (36, 867020), (40, 780318), (42, 743160), (44, 709380), (45, 693616), (48, 650265), (55, 567504), (56, 557370), (60, 520212), (63, 495440), (66, 472920), (70, 445896), (72, 433510), (77, 405360), (80, 390159), (84, 371580), (88, 354690), (90, 346808), (99, 315280), (105, 297264), (110, 283752), (112, 278685), (120, 260106), (126, 247720), (132, 236460), (140, 222948), (144, 216755), (154, 202680), (165, 189168), (168, 185790), (176, 177345), (180, 173404), (198, 157640), (210, 148632), (220, 141876), (231, 135120), (240, 130053), (252, 123860), (264, 118230), (280, 111474), (308, 101340), (315, 99088), (330, 94584), (336, 92895), (360, 86702), (385, 81072), (396, 78820), (420, 74316), (440, 70938), (462, 67560), (495, 63056), (504, 61930), (528, 59115), (560, 55737), (563, 55440), (616, 50670), (630, 49544), (660, 47292), (693, 45040), (720, 43351), (770, 40536), (792, 39410), (840, 37158), (880, 35469), (924, 33780), (990, 31528), (1008, 30965), (1126, 27720), (1155, 27024), (1232, 25335), (1260, 24772), (1320, 23646), (1386, 22520), (1540, 20268), (1584, 19705), (1680, 18579), (1689, 18480), (1848, 16890), (1980, 15764), (2252, 13860), (2310, 13512), (2520, 12386), (2640, 11823), (2772, 11260), (2815, 11088), (3080, 10134), (3378, 9240), (3465, 9008), (3696, 8445), (3941, 7920), (3960, 7882), (4504, 6930), (4620, 6756), (5040, 6193), (5067, 6160), (5544, 5630)]