21000813840

素因数分解:

$2^4\times 3^3\times 5^1\times {\mathrm{9722599}}^1$

素因数の和:9722621

約数の個数: 80

約数和(自身を含む): 72336144000

約数和(自身を除く): 51335330160

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 16, 18, 20, 24, 27, 30, 36, 40, 45, 48, 54, 60, 72, 80, 90, 108, 120, 135, 144, 180, 216, 240, 270, 360, 432, 540, 720, 1080, 2160, 9722599, 19445198, 29167797, 38890396, 48612995, 58335594, 77780792, 87503391, 97225990, 116671188, 145838985, 155561584, 175006782, 194451980, 233342376, 262510173, 291677970, 350013564, 388903960, 437516955, 466684752, 525020346, 583355940, 700027128, 777807920, 875033910, 1050040692, 1166711880, 1312550865, 1400054256, 1750067820, 2100081384, 2333423760, 2625101730, 3500135640, 4200162768, 5250203460, 7000271280, 10500406920, 21000813840]

約数ペア:

[(1, 21000813840), (2, 10500406920), (3, 7000271280), (4, 5250203460), (5, 4200162768), (6, 3500135640), (8, 2625101730), (9, 2333423760), (10, 2100081384), (12, 1750067820), (15, 1400054256), (16, 1312550865), (18, 1166711880), (20, 1050040692), (24, 875033910), (27, 777807920), (30, 700027128), (36, 583355940), (40, 525020346), (45, 466684752), (48, 437516955), (54, 388903960), (60, 350013564), (72, 291677970), (80, 262510173), (90, 233342376), (108, 194451980), (120, 175006782), (135, 155561584), (144, 145838985), (180, 116671188), (216, 97225990), (240, 87503391), (270, 77780792), (360, 58335594), (432, 48612995), (540, 38890396), (720, 29167797), (1080, 19445198), (2160, 9722599)]