21396240

素因数分解:

$2^4\times 3^2\times 5^1\times {\mathrm{29717}}^1$

素因数の和:29736

約数の個数: 60

約数和(自身を含む): 71858124

約数和(自身を除く): 50461884

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 16, 18, 20, 24, 30, 36, 40, 45, 48, 60, 72, 80, 90, 120, 144, 180, 240, 360, 720, 29717, 59434, 89151, 118868, 148585, 178302, 237736, 267453, 297170, 356604, 445755, 475472, 534906, 594340, 713208, 891510, 1069812, 1188680, 1337265, 1426416, 1783020, 2139624, 2377360, 2674530, 3566040, 4279248, 5349060, 7132080, 10698120, 21396240]

約数ペア:

[(1, 21396240), (2, 10698120), (3, 7132080), (4, 5349060), (5, 4279248), (6, 3566040), (8, 2674530), (9, 2377360), (10, 2139624), (12, 1783020), (15, 1426416), (16, 1337265), (18, 1188680), (20, 1069812), (24, 891510), (30, 713208), (36, 594340), (40, 534906), (45, 475472), (48, 445755), (60, 356604), (72, 297170), (80, 267453), (90, 237736), (120, 178302), (144, 148585), (180, 118868), (240, 89151), (360, 59434), (720, 29717)]