289678720

素因数分解:

$2^7\times 5^1\times {\mathrm{263}}^1\times {\mathrm{1721}}^1$

素因数の和:2003

約数の個数: 64

約数和(自身を含む): 695550240

約数和(自身を除く): 405871520

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 263, 320, 526, 640, 1052, 1315, 1721, 2104, 2630, 3442, 4208, 5260, 6884, 8416, 8605, 10520, 13768, 16832, 17210, 21040, 27536, 33664, 34420, 42080, 55072, 68840, 84160, 110144, 137680, 168320, 220288, 275360, 452623, 550720, 905246, 1101440, 1810492, 2263115, 3620984, 4526230, 7241968, 9052460, 14483936, 18104920, 28967872, 36209840, 57935744, 72419680, 144839360, 289678720]

約数ペア:

[(1, 289678720), (2, 144839360), (4, 72419680), (5, 57935744), (8, 36209840), (10, 28967872), (16, 18104920), (20, 14483936), (32, 9052460), (40, 7241968), (64, 4526230), (80, 3620984), (128, 2263115), (160, 1810492), (263, 1101440), (320, 905246), (526, 550720), (640, 452623), (1052, 275360), (1315, 220288), (1721, 168320), (2104, 137680), (2630, 110144), (3442, 84160), (4208, 68840), (5260, 55072), (6884, 42080), (8416, 34420), (8605, 33664), (10520, 27536), (13768, 21040), (16832, 17210)]