20985888

素因数分解:

$2^5\times 3^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{167}}^1$

素因数の和:215

約数の個数: 192

約数和(自身を含む): 73156608

約数和(自身を除く): 52170720

約数列:

[1, 2, 3, 4, 6, 7, 8, 11, 12, 14, 16, 17, 21, 22, 24, 28, 32, 33, 34, 42, 44, 48, 51, 56, 66, 68, 77, 84, 88, 96, 102, 112, 119, 132, 136, 154, 167, 168, 176, 187, 204, 224, 231, 238, 264, 272, 308, 334, 336, 352, 357, 374, 408, 462, 476, 501, 528, 544, 561, 616, 668, 672, 714, 748, 816, 924, 952, 1002, 1056, 1122, 1169, 1232, 1309, 1336, 1428, 1496, 1632, 1837, 1848, 1904, 2004, 2244, 2338, 2464, 2618, 2672, 2839, 2856, 2992, 3507, 3674, 3696, 3808, 3927, 4008, 4488, 4676, 5236, 5344, 5511, 5678, 5712, 5984, 7014, 7348, 7392, 7854, 8016, 8517, 8976, 9352, 10472, 11022, 11356, 11424, 12859, 14028, 14696, 15708, 16032, 17034, 17952, 18704, 19873, 20944, 22044, 22712, 25718, 28056, 29392, 31229, 31416, 34068, 37408, 38577, 39746, 41888, 44088, 45424, 51436, 56112, 58784, 59619, 62458, 62832, 68136, 77154, 79492, 88176, 90848, 93687, 102872, 112224, 119238, 124916, 125664, 136272, 154308, 158984, 176352, 187374, 205744, 218603, 238476, 249832, 272544, 308616, 317968, 374748, 411488, 437206, 476952, 499664, 617232, 635936, 655809, 749496, 874412, 953904, 999328, 1234464, 1311618, 1498992, 1748824, 1907808, 2623236, 2997984, 3497648, 5246472, 6995296, 10492944, 20985888]

約数ペア:

[(1, 20985888), (2, 10492944), (3, 6995296), (4, 5246472), (6, 3497648), (7, 2997984), (8, 2623236), (11, 1907808), (12, 1748824), (14, 1498992), (16, 1311618), (17, 1234464), (21, 999328), (22, 953904), (24, 874412), (28, 749496), (32, 655809), (33, 635936), (34, 617232), (42, 499664), (44, 476952), (48, 437206), (51, 411488), (56, 374748), (66, 317968), (68, 308616), (77, 272544), (84, 249832), (88, 238476), (96, 218603), (102, 205744), (112, 187374), (119, 176352), (132, 158984), (136, 154308), (154, 136272), (167, 125664), (168, 124916), (176, 119238), (187, 112224), (204, 102872), (224, 93687), (231, 90848), (238, 88176), (264, 79492), (272, 77154), (308, 68136), (334, 62832), (336, 62458), (352, 59619), (357, 58784), (374, 56112), (408, 51436), (462, 45424), (476, 44088), (501, 41888), (528, 39746), (544, 38577), (561, 37408), (616, 34068), (668, 31416), (672, 31229), (714, 29392), (748, 28056), (816, 25718), (924, 22712), (952, 22044), (1002, 20944), (1056, 19873), (1122, 18704), (1169, 17952), (1232, 17034), (1309, 16032), (1336, 15708), (1428, 14696), (1496, 14028), (1632, 12859), (1837, 11424), (1848, 11356), (1904, 11022), (2004, 10472), (2244, 9352), (2338, 8976), (2464, 8517), (2618, 8016), (2672, 7854), (2839, 7392), (2856, 7348), (2992, 7014), (3507, 5984), (3674, 5712), (3696, 5678), (3808, 5511), (3927, 5344), (4008, 5236), (4488, 4676)]