291031520

素因数分解:

$2^5\times 5^1\times {\mathrm{13}}^2\times {\mathrm{47}}^1\times {\mathrm{229}}^1$

素因数の和:317

約数の個数: 144

約数和(自身を含む): 763680960

約数和(自身を除く): 472649440

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 32, 40, 47, 52, 65, 80, 94, 104, 130, 160, 169, 188, 208, 229, 235, 260, 338, 376, 416, 458, 470, 520, 611, 676, 752, 845, 916, 940, 1040, 1145, 1222, 1352, 1504, 1690, 1832, 1880, 2080, 2290, 2444, 2704, 2977, 3055, 3380, 3664, 3760, 4580, 4888, 5408, 5954, 6110, 6760, 7328, 7520, 7943, 9160, 9776, 10763, 11908, 12220, 13520, 14885, 15886, 18320, 19552, 21526, 23816, 24440, 27040, 29770, 31772, 36640, 38701, 39715, 43052, 47632, 48880, 53815, 59540, 63544, 77402, 79430, 86104, 95264, 97760, 107630, 119080, 127088, 139919, 154804, 158860, 172208, 193505, 215260, 238160, 254176, 279838, 309608, 317720, 344416, 387010, 430520, 476320, 559676, 619216, 635440, 699595, 774020, 861040, 1119352, 1238432, 1270880, 1399190, 1548040, 1722080, 1818947, 2238704, 2798380, 3096080, 3637894, 4477408, 5596760, 6192160, 7275788, 9094735, 11193520, 14551576, 18189470, 22387040, 29103152, 36378940, 58206304, 72757880, 145515760, 291031520]

約数ペア:

[(1, 291031520), (2, 145515760), (4, 72757880), (5, 58206304), (8, 36378940), (10, 29103152), (13, 22387040), (16, 18189470), (20, 14551576), (26, 11193520), (32, 9094735), (40, 7275788), (47, 6192160), (52, 5596760), (65, 4477408), (80, 3637894), (94, 3096080), (104, 2798380), (130, 2238704), (160, 1818947), (169, 1722080), (188, 1548040), (208, 1399190), (229, 1270880), (235, 1238432), (260, 1119352), (338, 861040), (376, 774020), (416, 699595), (458, 635440), (470, 619216), (520, 559676), (611, 476320), (676, 430520), (752, 387010), (845, 344416), (916, 317720), (940, 309608), (1040, 279838), (1145, 254176), (1222, 238160), (1352, 215260), (1504, 193505), (1690, 172208), (1832, 158860), (1880, 154804), (2080, 139919), (2290, 127088), (2444, 119080), (2704, 107630), (2977, 97760), (3055, 95264), (3380, 86104), (3664, 79430), (3760, 77402), (4580, 63544), (4888, 59540), (5408, 53815), (5954, 48880), (6110, 47632), (6760, 43052), (7328, 39715), (7520, 38701), (7943, 36640), (9160, 31772), (9776, 29770), (10763, 27040), (11908, 24440), (12220, 23816), (13520, 21526), (14885, 19552), (15886, 18320)]