20321460

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{29}}^1\times {\mathrm{229}}^1$

素因数の和:290

約数の個数: 144

約数和(自身を含む): 67813200

約数和(自身を除く): 47491740

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 17, 18, 20, 29, 30, 34, 36, 45, 51, 58, 60, 68, 85, 87, 90, 102, 116, 145, 153, 170, 174, 180, 204, 229, 255, 261, 290, 306, 340, 348, 435, 458, 493, 510, 522, 580, 612, 687, 765, 870, 916, 986, 1020, 1044, 1145, 1305, 1374, 1479, 1530, 1740, 1972, 2061, 2290, 2465, 2610, 2748, 2958, 3060, 3435, 3893, 4122, 4437, 4580, 4930, 5220, 5916, 6641, 6870, 7395, 7786, 8244, 8874, 9860, 10305, 11679, 13282, 13740, 14790, 15572, 17748, 19465, 19923, 20610, 22185, 23358, 26564, 29580, 33205, 35037, 38930, 39846, 41220, 44370, 46716, 58395, 59769, 66410, 70074, 77860, 79692, 88740, 99615, 112897, 116790, 119538, 132820, 140148, 175185, 199230, 225794, 233580, 239076, 298845, 338691, 350370, 398460, 451588, 564485, 597690, 677382, 700740, 1016073, 1128970, 1195380, 1354764, 1693455, 2032146, 2257940, 3386910, 4064292, 5080365, 6773820, 10160730, 20321460]

約数ペア:

[(1, 20321460), (2, 10160730), (3, 6773820), (4, 5080365), (5, 4064292), (6, 3386910), (9, 2257940), (10, 2032146), (12, 1693455), (15, 1354764), (17, 1195380), (18, 1128970), (20, 1016073), (29, 700740), (30, 677382), (34, 597690), (36, 564485), (45, 451588), (51, 398460), (58, 350370), (60, 338691), (68, 298845), (85, 239076), (87, 233580), (90, 225794), (102, 199230), (116, 175185), (145, 140148), (153, 132820), (170, 119538), (174, 116790), (180, 112897), (204, 99615), (229, 88740), (255, 79692), (261, 77860), (290, 70074), (306, 66410), (340, 59769), (348, 58395), (435, 46716), (458, 44370), (493, 41220), (510, 39846), (522, 38930), (580, 35037), (612, 33205), (687, 29580), (765, 26564), (870, 23358), (916, 22185), (986, 20610), (1020, 19923), (1044, 19465), (1145, 17748), (1305, 15572), (1374, 14790), (1479, 13740), (1530, 13282), (1740, 11679), (1972, 10305), (2061, 9860), (2290, 8874), (2465, 8244), (2610, 7786), (2748, 7395), (2958, 6870), (3060, 6641), (3435, 5916), (3893, 5220), (4122, 4930), (4437, 4580)]