221239905

素因数分解:

$3^1\times 5^1\times {\mathrm{71}}^1\times {\mathrm{293}}^1\times {\mathrm{709}}^1$

素因数の和:1081

約数の個数: 32

約数和(自身を含む): 360702720

約数和(自身を除く): 139462815

約数列:

[1, 3, 5, 15, 71, 213, 293, 355, 709, 879, 1065, 1465, 2127, 3545, 4395, 10635, 20803, 50339, 62409, 104015, 151017, 207737, 251695, 312045, 623211, 755085, 1038685, 3116055, 14749327, 44247981, 73746635, 221239905]

約数ペア:

[(1, 221239905), (3, 73746635), (5, 44247981), (15, 14749327), (71, 3116055), (213, 1038685), (293, 755085), (355, 623211), (709, 312045), (879, 251695), (1065, 207737), (1465, 151017), (2127, 104015), (3545, 62409), (4395, 50339), (10635, 20803)]