641709920

素因数分解:

$2^5\times 5^1\times {\mathrm{31}}^1\times {\mathrm{67}}^1\times {\mathrm{1931}}^1$

素因数の和:2044

約数の個数: 96

約数和(自身を含む): 1589124096

約数和(自身を除く): 947414176

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 31, 32, 40, 62, 67, 80, 124, 134, 155, 160, 248, 268, 310, 335, 496, 536, 620, 670, 992, 1072, 1240, 1340, 1931, 2077, 2144, 2480, 2680, 3862, 4154, 4960, 5360, 7724, 8308, 9655, 10385, 10720, 15448, 16616, 19310, 20770, 30896, 33232, 38620, 41540, 59861, 61792, 66464, 77240, 83080, 119722, 129377, 154480, 166160, 239444, 258754, 299305, 308960, 332320, 478888, 517508, 598610, 646885, 957776, 1035016, 1197220, 1293770, 1915552, 2070032, 2394440, 2587540, 4010687, 4140064, 4788880, 5175080, 8021374, 9577760, 10350160, 16042748, 20053435, 20700320, 32085496, 40106870, 64170992, 80213740, 128341984, 160427480, 320854960, 641709920]

約数ペア:

[(1, 641709920), (2, 320854960), (4, 160427480), (5, 128341984), (8, 80213740), (10, 64170992), (16, 40106870), (20, 32085496), (31, 20700320), (32, 20053435), (40, 16042748), (62, 10350160), (67, 9577760), (80, 8021374), (124, 5175080), (134, 4788880), (155, 4140064), (160, 4010687), (248, 2587540), (268, 2394440), (310, 2070032), (335, 1915552), (496, 1293770), (536, 1197220), (620, 1035016), (670, 957776), (992, 646885), (1072, 598610), (1240, 517508), (1340, 478888), (1931, 332320), (2077, 308960), (2144, 299305), (2480, 258754), (2680, 239444), (3862, 166160), (4154, 154480), (4960, 129377), (5360, 119722), (7724, 83080), (8308, 77240), (9655, 66464), (10385, 61792), (10720, 59861), (15448, 41540), (16616, 38620), (19310, 33232), (20770, 30896)]