21245760

素因数分解:

$2^6\times 3^3\times 5^1\times {\mathrm{2459}}^1$

素因数の和:2485

約数の個数: 112

約数和(自身を含む): 74980800

約数和(自身を除く): 53735040

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 16, 18, 20, 24, 27, 30, 32, 36, 40, 45, 48, 54, 60, 64, 72, 80, 90, 96, 108, 120, 135, 144, 160, 180, 192, 216, 240, 270, 288, 320, 360, 432, 480, 540, 576, 720, 864, 960, 1080, 1440, 1728, 2160, 2459, 2880, 4320, 4918, 7377, 8640, 9836, 12295, 14754, 19672, 22131, 24590, 29508, 36885, 39344, 44262, 49180, 59016, 66393, 73770, 78688, 88524, 98360, 110655, 118032, 132786, 147540, 157376, 177048, 196720, 221310, 236064, 265572, 295080, 331965, 354096, 393440, 442620, 472128, 531144, 590160, 663930, 708192, 786880, 885240, 1062288, 1180320, 1327860, 1416384, 1770480, 2124576, 2360640, 2655720, 3540960, 4249152, 5311440, 7081920, 10622880, 21245760]

約数ペア:

[(1, 21245760), (2, 10622880), (3, 7081920), (4, 5311440), (5, 4249152), (6, 3540960), (8, 2655720), (9, 2360640), (10, 2124576), (12, 1770480), (15, 1416384), (16, 1327860), (18, 1180320), (20, 1062288), (24, 885240), (27, 786880), (30, 708192), (32, 663930), (36, 590160), (40, 531144), (45, 472128), (48, 442620), (54, 393440), (60, 354096), (64, 331965), (72, 295080), (80, 265572), (90, 236064), (96, 221310), (108, 196720), (120, 177048), (135, 157376), (144, 147540), (160, 132786), (180, 118032), (192, 110655), (216, 98360), (240, 88524), (270, 78688), (288, 73770), (320, 66393), (360, 59016), (432, 49180), (480, 44262), (540, 39344), (576, 36885), (720, 29508), (864, 24590), (960, 22131), (1080, 19672), (1440, 14754), (1728, 12295), (2160, 9836), (2459, 8640), (2880, 7377), (4320, 4918)]