20979201850

素因数分解:

$2^1\times 5^2\times {\mathrm{41}}^1\times {\mathrm{1291}}^1\times {\mathrm{7927}}^1$

素因数の和:9271

約数の個数: 48

約数和(自身を含む): 40009064256

約数和(自身を除く): 19029862406

約数列:

[1, 2, 5, 10, 25, 41, 50, 82, 205, 410, 1025, 1291, 2050, 2582, 6455, 7927, 12910, 15854, 32275, 39635, 52931, 64550, 79270, 105862, 198175, 264655, 325007, 396350, 529310, 650014, 1323275, 1625035, 2646550, 3250070, 8125175, 10233757, 16250350, 20467514, 51168785, 102337570, 255843925, 419584037, 511687850, 839168074, 2097920185, 4195840370, 10489600925, 20979201850]

約数ペア:

[(1, 20979201850), (2, 10489600925), (5, 4195840370), (10, 2097920185), (25, 839168074), (41, 511687850), (50, 419584037), (82, 255843925), (205, 102337570), (410, 51168785), (1025, 20467514), (1291, 16250350), (2050, 10233757), (2582, 8125175), (6455, 3250070), (7927, 2646550), (12910, 1625035), (15854, 1323275), (32275, 650014), (39635, 529310), (52931, 396350), (64550, 325007), (79270, 264655), (105862, 198175)]