81370000

素因数分解:

$2^4\times 5^4\times {\mathrm{79}}^1\times {\mathrm{103}}^1$

素因数の和:210

約数の個数: 100

約数和(自身を含む): 201435520

約数和(自身を除く): 120065520

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 40, 50, 79, 80, 100, 103, 125, 158, 200, 206, 250, 316, 395, 400, 412, 500, 515, 625, 632, 790, 824, 1000, 1030, 1250, 1264, 1580, 1648, 1975, 2000, 2060, 2500, 2575, 3160, 3950, 4120, 5000, 5150, 6320, 7900, 8137, 8240, 9875, 10000, 10300, 12875, 15800, 16274, 19750, 20600, 25750, 31600, 32548, 39500, 40685, 41200, 49375, 51500, 64375, 65096, 79000, 81370, 98750, 103000, 128750, 130192, 158000, 162740, 197500, 203425, 206000, 257500, 325480, 395000, 406850, 515000, 650960, 790000, 813700, 1017125, 1030000, 1627400, 2034250, 3254800, 4068500, 5085625, 8137000, 10171250, 16274000, 20342500, 40685000, 81370000]

約数ペア:

[(1, 81370000), (2, 40685000), (4, 20342500), (5, 16274000), (8, 10171250), (10, 8137000), (16, 5085625), (20, 4068500), (25, 3254800), (40, 2034250), (50, 1627400), (79, 1030000), (80, 1017125), (100, 813700), (103, 790000), (125, 650960), (158, 515000), (200, 406850), (206, 395000), (250, 325480), (316, 257500), (395, 206000), (400, 203425), (412, 197500), (500, 162740), (515, 158000), (625, 130192), (632, 128750), (790, 103000), (824, 98750), (1000, 81370), (1030, 79000), (1250, 65096), (1264, 64375), (1580, 51500), (1648, 49375), (1975, 41200), (2000, 40685), (2060, 39500), (2500, 32548), (2575, 31600), (3160, 25750), (3950, 20600), (4120, 19750), (5000, 16274), (5150, 15800), (6320, 12875), (7900, 10300), (8137, 10000), (8240, 9875)]