215657820

素因数分解:

$2^2\times 3^2\times 5^1\times 7^4\times {\mathrm{499}}^1$

素因数の和:542

約数の個数: 180

約数和(自身を含む): 764673000

約数和(自身を除く): 549015180

約数列:

[1, 2, 3, 4, 5, 6, 7, 9, 10, 12, 14, 15, 18, 20, 21, 28, 30, 35, 36, 42, 45, 49, 60, 63, 70, 84, 90, 98, 105, 126, 140, 147, 180, 196, 210, 245, 252, 294, 315, 343, 420, 441, 490, 499, 588, 630, 686, 735, 882, 980, 998, 1029, 1260, 1372, 1470, 1497, 1715, 1764, 1996, 2058, 2205, 2401, 2495, 2940, 2994, 3087, 3430, 3493, 4116, 4410, 4491, 4802, 4990, 5145, 5988, 6174, 6860, 6986, 7203, 7485, 8820, 8982, 9604, 9980, 10290, 10479, 12005, 12348, 13972, 14406, 14970, 15435, 17465, 17964, 20580, 20958, 21609, 22455, 24010, 24451, 28812, 29940, 30870, 31437, 34930, 36015, 41916, 43218, 44910, 48020, 48902, 52395, 61740, 62874, 69860, 72030, 73353, 86436, 89820, 97804, 104790, 108045, 122255, 125748, 144060, 146706, 157185, 171157, 209580, 216090, 220059, 244510, 293412, 314370, 342314, 366765, 432180, 440118, 489020, 513471, 628740, 684628, 733530, 855785, 880236, 1026942, 1100295, 1198099, 1467060, 1540413, 1711570, 2053884, 2200590, 2396198, 2567355, 3080826, 3423140, 3594297, 4401180, 4792396, 5134710, 5990495, 6161652, 7188594, 7702065, 10269420, 10782891, 11980990, 14377188, 15404130, 17971485, 21565782, 23961980, 30808260, 35942970, 43131564, 53914455, 71885940, 107828910, 215657820]

約数ペア:

[(1, 215657820), (2, 107828910), (3, 71885940), (4, 53914455), (5, 43131564), (6, 35942970), (7, 30808260), (9, 23961980), (10, 21565782), (12, 17971485), (14, 15404130), (15, 14377188), (18, 11980990), (20, 10782891), (21, 10269420), (28, 7702065), (30, 7188594), (35, 6161652), (36, 5990495), (42, 5134710), (45, 4792396), (49, 4401180), (60, 3594297), (63, 3423140), (70, 3080826), (84, 2567355), (90, 2396198), (98, 2200590), (105, 2053884), (126, 1711570), (140, 1540413), (147, 1467060), (180, 1198099), (196, 1100295), (210, 1026942), (245, 880236), (252, 855785), (294, 733530), (315, 684628), (343, 628740), (420, 513471), (441, 489020), (490, 440118), (499, 432180), (588, 366765), (630, 342314), (686, 314370), (735, 293412), (882, 244510), (980, 220059), (998, 216090), (1029, 209580), (1260, 171157), (1372, 157185), (1470, 146706), (1497, 144060), (1715, 125748), (1764, 122255), (1996, 108045), (2058, 104790), (2205, 97804), (2401, 89820), (2495, 86436), (2940, 73353), (2994, 72030), (3087, 69860), (3430, 62874), (3493, 61740), (4116, 52395), (4410, 48902), (4491, 48020), (4802, 44910), (4990, 43218), (5145, 41916), (5988, 36015), (6174, 34930), (6860, 31437), (6986, 30870), (7203, 29940), (7485, 28812), (8820, 24451), (8982, 24010), (9604, 22455), (9980, 21609), (10290, 20958), (10479, 20580), (12005, 17964), (12348, 17465), (13972, 15435), (14406, 14970)]