20145011975

素因数分解:

$5^2\times {\mathrm{11}}^1\times {\mathrm{277}}^1\times {\mathrm{373}}^1\times {\mathrm{709}}^1$

素因数の和:1380

約数の個数: 48

約数和(自身を含む): 27461084640

約数和(自身を除く): 7316072665

約数列:

[1, 5, 11, 25, 55, 275, 277, 373, 709, 1385, 1865, 3047, 3545, 4103, 6925, 7799, 9325, 15235, 17725, 20515, 38995, 76175, 102575, 103321, 194975, 196393, 264457, 516605, 981965, 1136531, 1322285, 2160323, 2583025, 2909027, 4909825, 5682655, 6611425, 10801615, 14545135, 28413275, 54008075, 72725675, 73254589, 366272945, 805800479, 1831364725, 4029002395, 20145011975]

約数ペア:

[(1, 20145011975), (5, 4029002395), (11, 1831364725), (25, 805800479), (55, 366272945), (275, 73254589), (277, 72725675), (373, 54008075), (709, 28413275), (1385, 14545135), (1865, 10801615), (3047, 6611425), (3545, 5682655), (4103, 4909825), (6925, 2909027), (7799, 2583025), (9325, 2160323), (15235, 1322285), (17725, 1136531), (20515, 981965), (38995, 516605), (76175, 264457), (102575, 196393), (103321, 194975)]