17858740

素因数分解:

$2^2\times 5^1\times {\mathrm{79}}^1\times {\mathrm{89}}^1\times {\mathrm{127}}^1$

素因数の和:304

約数の個数: 48

約数和(自身を含む): 38707200

約数和(自身を除く): 20848460

約数列:

[1, 2, 4, 5, 10, 20, 79, 89, 127, 158, 178, 254, 316, 356, 395, 445, 508, 635, 790, 890, 1270, 1580, 1780, 2540, 7031, 10033, 11303, 14062, 20066, 22606, 28124, 35155, 40132, 45212, 50165, 56515, 70310, 100330, 113030, 140620, 200660, 226060, 892937, 1785874, 3571748, 4464685, 8929370, 17858740]

約数ペア:

[(1, 17858740), (2, 8929370), (4, 4464685), (5, 3571748), (10, 1785874), (20, 892937), (79, 226060), (89, 200660), (127, 140620), (158, 113030), (178, 100330), (254, 70310), (316, 56515), (356, 50165), (395, 45212), (445, 40132), (508, 35155), (635, 28124), (790, 22606), (890, 20066), (1270, 14062), (1580, 11303), (1780, 10033), (2540, 7031)]