72419680

素因数分解:

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

素因数の和:1999

約数の個数: 48

約数和(自身を含む): 171841824

約数和(自身を除く): 99422144

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 80, 160, 263, 526, 1052, 1315, 1721, 2104, 2630, 3442, 4208, 5260, 6884, 8416, 8605, 10520, 13768, 17210, 21040, 27536, 34420, 42080, 55072, 68840, 137680, 275360, 452623, 905246, 1810492, 2263115, 3620984, 4526230, 7241968, 9052460, 14483936, 18104920, 36209840, 72419680]

約数ペア:

[(1, 72419680), (2, 36209840), (4, 18104920), (5, 14483936), (8, 9052460), (10, 7241968), (16, 4526230), (20, 3620984), (32, 2263115), (40, 1810492), (80, 905246), (160, 452623), (263, 275360), (526, 137680), (1052, 68840), (1315, 55072), (1721, 42080), (2104, 34420), (2630, 27536), (3442, 21040), (4208, 17210), (5260, 13768), (6884, 10520), (8416, 8605)]