20187881010

素因数分解:

$2^1\times 3^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{101}}^2\times {\mathrm{1999}}^1$

素因数の和:2225

約数の個数: 144

約数和(自身を含む): 57861648000

約数和(自身を除く): 37673766990

約数列:

[1, 2, 3, 5, 6, 9, 10, 11, 15, 18, 22, 30, 33, 45, 55, 66, 90, 99, 101, 110, 165, 198, 202, 303, 330, 495, 505, 606, 909, 990, 1010, 1111, 1515, 1818, 1999, 2222, 3030, 3333, 3998, 4545, 5555, 5997, 6666, 9090, 9995, 9999, 10201, 11110, 11994, 16665, 17991, 19990, 19998, 20402, 21989, 29985, 30603, 33330, 35982, 43978, 49995, 51005, 59970, 61206, 65967, 89955, 91809, 99990, 102010, 109945, 112211, 131934, 153015, 179910, 183618, 197901, 201899, 219890, 224422, 306030, 329835, 336633, 395802, 403798, 459045, 561055, 605697, 659670, 673266, 918090, 989505, 1009495, 1009899, 1122110, 1211394, 1683165, 1817091, 1979010, 2018990, 2019798, 2220889, 3028485, 3366330, 3634182, 4441778, 5049495, 6056970, 6662667, 9085455, 10098990, 11104445, 13325334, 18170910, 19988001, 20391799, 22208890, 33313335, 39976002, 40783598, 61175397, 66626670, 99940005, 101958995, 122350794, 183526191, 199880010, 203917990, 224309789, 305876985, 367052382, 448619578, 611753970, 672929367, 917630955, 1121548945, 1345858734, 1835261910, 2018788101, 2243097890, 3364646835, 4037576202, 6729293670, 10093940505, 20187881010]

約数ペア:

[(1, 20187881010), (2, 10093940505), (3, 6729293670), (5, 4037576202), (6, 3364646835), (9, 2243097890), (10, 2018788101), (11, 1835261910), (15, 1345858734), (18, 1121548945), (22, 917630955), (30, 672929367), (33, 611753970), (45, 448619578), (55, 367052382), (66, 305876985), (90, 224309789), (99, 203917990), (101, 199880010), (110, 183526191), (165, 122350794), (198, 101958995), (202, 99940005), (303, 66626670), (330, 61175397), (495, 40783598), (505, 39976002), (606, 33313335), (909, 22208890), (990, 20391799), (1010, 19988001), (1111, 18170910), (1515, 13325334), (1818, 11104445), (1999, 10098990), (2222, 9085455), (3030, 6662667), (3333, 6056970), (3998, 5049495), (4545, 4441778), (5555, 3634182), (5997, 3366330), (6666, 3028485), (9090, 2220889), (9995, 2019798), (9999, 2018990), (10201, 1979010), (11110, 1817091), (11994, 1683165), (16665, 1211394), (17991, 1122110), (19990, 1009899), (19998, 1009495), (20402, 989505), (21989, 918090), (29985, 673266), (30603, 659670), (33330, 605697), (35982, 561055), (43978, 459045), (49995, 403798), (51005, 395802), (59970, 336633), (61206, 329835), (65967, 306030), (89955, 224422), (91809, 219890), (99990, 201899), (102010, 197901), (109945, 183618), (112211, 179910), (131934, 153015)]