71717980

素因数分解:

$2^2\times 5^1\times {\mathrm{43}}^1\times {\mathrm{89}}^1\times {\mathrm{937}}^1$

素因数の和:1078

約数の個数: 48

約数和(自身を含む): 156008160

約数和(自身を除く): 84290180

約数列:

[1, 2, 4, 5, 10, 20, 43, 86, 89, 172, 178, 215, 356, 430, 445, 860, 890, 937, 1780, 1874, 3748, 3827, 4685, 7654, 9370, 15308, 18740, 19135, 38270, 40291, 76540, 80582, 83393, 161164, 166786, 201455, 333572, 402910, 416965, 805820, 833930, 1667860, 3585899, 7171798, 14343596, 17929495, 35858990, 71717980]

約数ペア:

[(1, 71717980), (2, 35858990), (4, 17929495), (5, 14343596), (10, 7171798), (20, 3585899), (43, 1667860), (86, 833930), (89, 805820), (172, 416965), (178, 402910), (215, 333572), (356, 201455), (430, 166786), (445, 161164), (860, 83393), (890, 80582), (937, 76540), (1780, 40291), (1874, 38270), (3748, 19135), (3827, 18740), (4685, 15308), (7654, 9370)]