20587400

素因数分解:

$2^3\times 5^2\times {\mathrm{79}}^1\times {\mathrm{1303}}^1$

素因数の和:1398

約数の個数: 48

約数和(自身を含む): 48508800

約数和(自身を除く): 27921400

約数列:

[1, 2, 4, 5, 8, 10, 20, 25, 40, 50, 79, 100, 158, 200, 316, 395, 632, 790, 1303, 1580, 1975, 2606, 3160, 3950, 5212, 6515, 7900, 10424, 13030, 15800, 26060, 32575, 52120, 65150, 102937, 130300, 205874, 260600, 411748, 514685, 823496, 1029370, 2058740, 2573425, 4117480, 5146850, 10293700, 20587400]

約数ペア:

[(1, 20587400), (2, 10293700), (4, 5146850), (5, 4117480), (8, 2573425), (10, 2058740), (20, 1029370), (25, 823496), (40, 514685), (50, 411748), (79, 260600), (100, 205874), (158, 130300), (200, 102937), (316, 65150), (395, 52120), (632, 32575), (790, 26060), (1303, 15800), (1580, 13030), (1975, 10424), (2606, 7900), (3160, 6515), (3950, 5212)]