217821520

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{41}}^1\times {\mathrm{53}}^1\times {\mathrm{179}}^1$

素因数の和:293

約数の個数: 160

約数和(自身を含む): 607461120

約数和(自身を除く): 389639600

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 35, 40, 41, 53, 56, 70, 80, 82, 106, 112, 140, 164, 179, 205, 212, 265, 280, 287, 328, 358, 371, 410, 424, 530, 560, 574, 656, 716, 742, 820, 848, 895, 1060, 1148, 1253, 1432, 1435, 1484, 1640, 1790, 1855, 2120, 2173, 2296, 2506, 2864, 2870, 2968, 3280, 3580, 3710, 4240, 4346, 4592, 5012, 5740, 5936, 6265, 7160, 7339, 7420, 8692, 9487, 10024, 10865, 11480, 12530, 14320, 14678, 14840, 15211, 17384, 18974, 20048, 21730, 22960, 25060, 29356, 29680, 30422, 34768, 36695, 37948, 43460, 47435, 50120, 51373, 58712, 60844, 66409, 73390, 75896, 76055, 86920, 94870, 100240, 102746, 117424, 121688, 132818, 146780, 151792, 152110, 173840, 189740, 205492, 243376, 256865, 265636, 293560, 304220, 332045, 379480, 388967, 410984, 513730, 531272, 587120, 608440, 664090, 758960, 777934, 821968, 1027460, 1062544, 1216880, 1328180, 1555868, 1944835, 2054920, 2656360, 2722769, 3111736, 3889670, 4109840, 5312720, 5445538, 6223472, 7779340, 10891076, 13613845, 15558680, 21782152, 27227690, 31117360, 43564304, 54455380, 108910760, 217821520]

約数ペア:

[(1, 217821520), (2, 108910760), (4, 54455380), (5, 43564304), (7, 31117360), (8, 27227690), (10, 21782152), (14, 15558680), (16, 13613845), (20, 10891076), (28, 7779340), (35, 6223472), (40, 5445538), (41, 5312720), (53, 4109840), (56, 3889670), (70, 3111736), (80, 2722769), (82, 2656360), (106, 2054920), (112, 1944835), (140, 1555868), (164, 1328180), (179, 1216880), (205, 1062544), (212, 1027460), (265, 821968), (280, 777934), (287, 758960), (328, 664090), (358, 608440), (371, 587120), (410, 531272), (424, 513730), (530, 410984), (560, 388967), (574, 379480), (656, 332045), (716, 304220), (742, 293560), (820, 265636), (848, 256865), (895, 243376), (1060, 205492), (1148, 189740), (1253, 173840), (1432, 152110), (1435, 151792), (1484, 146780), (1640, 132818), (1790, 121688), (1855, 117424), (2120, 102746), (2173, 100240), (2296, 94870), (2506, 86920), (2864, 76055), (2870, 75896), (2968, 73390), (3280, 66409), (3580, 60844), (3710, 58712), (4240, 51373), (4346, 50120), (4592, 47435), (5012, 43460), (5740, 37948), (5936, 36695), (6265, 34768), (7160, 30422), (7339, 29680), (7420, 29356), (8692, 25060), (9487, 22960), (10024, 21730), (10865, 20048), (11480, 18974), (12530, 17384), (14320, 15211), (14678, 14840)]