278980020

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{11}}^2\times {\mathrm{12809}}^1$

素因数の和:12846

約数の個数: 108

約数和(自身を含む): 930236580

約数和(自身を除く): 651256560

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 11, 12, 15, 18, 20, 22, 30, 33, 36, 44, 45, 55, 60, 66, 90, 99, 110, 121, 132, 165, 180, 198, 220, 242, 330, 363, 396, 484, 495, 605, 660, 726, 990, 1089, 1210, 1452, 1815, 1980, 2178, 2420, 3630, 4356, 5445, 7260, 10890, 12809, 21780, 25618, 38427, 51236, 64045, 76854, 115281, 128090, 140899, 153708, 192135, 230562, 256180, 281798, 384270, 422697, 461124, 563596, 576405, 704495, 768540, 845394, 1152810, 1268091, 1408990, 1549889, 1690788, 2113485, 2305620, 2536182, 2817980, 3099778, 4226970, 4649667, 5072364, 6199556, 6340455, 7749445, 8453940, 9299334, 12680910, 13949001, 15498890, 18598668, 23248335, 25361820, 27898002, 30997780, 46496670, 55796004, 69745005, 92993340, 139490010, 278980020]

約数ペア:

[(1, 278980020), (2, 139490010), (3, 92993340), (4, 69745005), (5, 55796004), (6, 46496670), (9, 30997780), (10, 27898002), (11, 25361820), (12, 23248335), (15, 18598668), (18, 15498890), (20, 13949001), (22, 12680910), (30, 9299334), (33, 8453940), (36, 7749445), (44, 6340455), (45, 6199556), (55, 5072364), (60, 4649667), (66, 4226970), (90, 3099778), (99, 2817980), (110, 2536182), (121, 2305620), (132, 2113485), (165, 1690788), (180, 1549889), (198, 1408990), (220, 1268091), (242, 1152810), (330, 845394), (363, 768540), (396, 704495), (484, 576405), (495, 563596), (605, 461124), (660, 422697), (726, 384270), (990, 281798), (1089, 256180), (1210, 230562), (1452, 192135), (1815, 153708), (1980, 140899), (2178, 128090), (2420, 115281), (3630, 76854), (4356, 64045), (5445, 51236), (7260, 38427), (10890, 25618), (12809, 21780)]