80215775

素因数分解:

$5^2\times {\mathrm{17}}^1\times {\mathrm{173}}^1\times {\mathrm{1091}}^1$

素因数の和:1291

約数の個数: 24

約数和(自身を含む): 106024464

約数和(自身を除く): 25808689

約数列:

[1, 5, 17, 25, 85, 173, 425, 865, 1091, 2941, 4325, 5455, 14705, 18547, 27275, 73525, 92735, 188743, 463675, 943715, 3208631, 4718575, 16043155, 80215775]

約数ペア:

[(1, 80215775), (5, 16043155), (17, 4718575), (25, 3208631), (85, 943715), (173, 463675), (425, 188743), (865, 92735), (1091, 73525), (2941, 27275), (4325, 18547), (5455, 14705)]