31520720

素因数分解:

$2^4\times 5^1\times 7^2\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{43}}^1$

素因数の和:98

約数の個数: 240

約数和(自身を含む): 100761408

約数和(自身を除く): 69240688

約数列:

[1, 2, 4, 5, 7, 8, 10, 11, 14, 16, 17, 20, 22, 28, 34, 35, 40, 43, 44, 49, 55, 56, 68, 70, 77, 80, 85, 86, 88, 98, 110, 112, 119, 136, 140, 154, 170, 172, 176, 187, 196, 215, 220, 238, 245, 272, 280, 301, 308, 340, 344, 374, 385, 392, 430, 440, 473, 476, 490, 539, 560, 595, 602, 616, 680, 688, 731, 748, 770, 784, 833, 860, 880, 935, 946, 952, 980, 1078, 1190, 1204, 1232, 1309, 1360, 1462, 1496, 1505, 1540, 1666, 1720, 1870, 1892, 1904, 1960, 2107, 2156, 2365, 2380, 2408, 2618, 2695, 2924, 2992, 3010, 3080, 3311, 3332, 3440, 3655, 3740, 3784, 3920, 4165, 4214, 4312, 4730, 4760, 4816, 5117, 5236, 5390, 5848, 6020, 6160, 6545, 6622, 6664, 7310, 7480, 7568, 8041, 8330, 8428, 8624, 9163, 9460, 9520, 10234, 10472, 10535, 10780, 11696, 12040, 13090, 13244, 13328, 14620, 14960, 16082, 16555, 16660, 16856, 18326, 18920, 20468, 20944, 21070, 21560, 23177, 24080, 25585, 26180, 26488, 29240, 32164, 33110, 33320, 33712, 35819, 36652, 37840, 40205, 40936, 42140, 43120, 45815, 46354, 51170, 52360, 52976, 56287, 58480, 64328, 66220, 66640, 71638, 73304, 80410, 81872, 84280, 91630, 92708, 102340, 104720, 112574, 115885, 128656, 132440, 143276, 146608, 160820, 168560, 179095, 183260, 185416, 204680, 225148, 231770, 264880, 281435, 286552, 321640, 358190, 366520, 370832, 394009, 409360, 450296, 463540, 562870, 573104, 643280, 716380, 733040, 788018, 900592, 927080, 1125740, 1432760, 1576036, 1854160, 1970045, 2251480, 2865520, 3152072, 3940090, 4502960, 6304144, 7880180, 15760360, 31520720]

約数ペア:

[(1, 31520720), (2, 15760360), (4, 7880180), (5, 6304144), (7, 4502960), (8, 3940090), (10, 3152072), (11, 2865520), (14, 2251480), (16, 1970045), (17, 1854160), (20, 1576036), (22, 1432760), (28, 1125740), (34, 927080), (35, 900592), (40, 788018), (43, 733040), (44, 716380), (49, 643280), (55, 573104), (56, 562870), (68, 463540), (70, 450296), (77, 409360), (80, 394009), (85, 370832), (86, 366520), (88, 358190), (98, 321640), (110, 286552), (112, 281435), (119, 264880), (136, 231770), (140, 225148), (154, 204680), (170, 185416), (172, 183260), (176, 179095), (187, 168560), (196, 160820), (215, 146608), (220, 143276), (238, 132440), (245, 128656), (272, 115885), (280, 112574), (301, 104720), (308, 102340), (340, 92708), (344, 91630), (374, 84280), (385, 81872), (392, 80410), (430, 73304), (440, 71638), (473, 66640), (476, 66220), (490, 64328), (539, 58480), (560, 56287), (595, 52976), (602, 52360), (616, 51170), (680, 46354), (688, 45815), (731, 43120), (748, 42140), (770, 40936), (784, 40205), (833, 37840), (860, 36652), (880, 35819), (935, 33712), (946, 33320), (952, 33110), (980, 32164), (1078, 29240), (1190, 26488), (1204, 26180), (1232, 25585), (1309, 24080), (1360, 23177), (1462, 21560), (1496, 21070), (1505, 20944), (1540, 20468), (1666, 18920), (1720, 18326), (1870, 16856), (1892, 16660), (1904, 16555), (1960, 16082), (2107, 14960), (2156, 14620), (2365, 13328), (2380, 13244), (2408, 13090), (2618, 12040), (2695, 11696), (2924, 10780), (2992, 10535), (3010, 10472), (3080, 10234), (3311, 9520), (3332, 9460), (3440, 9163), (3655, 8624), (3740, 8428), (3784, 8330), (3920, 8041), (4165, 7568), (4214, 7480), (4312, 7310), (4730, 6664), (4760, 6622), (4816, 6545), (5117, 6160), (5236, 6020), (5390, 5848)]