128564600

素因数分解:

$2^3\times 5^2\times {\mathrm{79}}^2\times {\mathrm{103}}^1$

素因数の和:277

約数の個数: 72

約数和(自身を含む): 305683560

約数和(自身を除く): 177118960

約数列:

[1, 2, 4, 5, 8, 10, 20, 25, 40, 50, 79, 100, 103, 158, 200, 206, 316, 395, 412, 515, 632, 790, 824, 1030, 1580, 1975, 2060, 2575, 3160, 3950, 4120, 5150, 6241, 7900, 8137, 10300, 12482, 15800, 16274, 20600, 24964, 31205, 32548, 40685, 49928, 62410, 65096, 81370, 124820, 156025, 162740, 203425, 249640, 312050, 325480, 406850, 624100, 642823, 813700, 1248200, 1285646, 1627400, 2571292, 3214115, 5142584, 6428230, 12856460, 16070575, 25712920, 32141150, 64282300, 128564600]

約数ペア:

[(1, 128564600), (2, 64282300), (4, 32141150), (5, 25712920), (8, 16070575), (10, 12856460), (20, 6428230), (25, 5142584), (40, 3214115), (50, 2571292), (79, 1627400), (100, 1285646), (103, 1248200), (158, 813700), (200, 642823), (206, 624100), (316, 406850), (395, 325480), (412, 312050), (515, 249640), (632, 203425), (790, 162740), (824, 156025), (1030, 124820), (1580, 81370), (1975, 65096), (2060, 62410), (2575, 49928), (3160, 40685), (3950, 32548), (4120, 31205), (5150, 24964), (6241, 20600), (7900, 16274), (8137, 15800), (10300, 12482)]