28109315

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{43}}^1\times {\mathrm{89}}^1\times {\mathrm{113}}^1$

素因数の和:263

約数の個数: 32

約数和(自身を含む): 37920960

約数和(自身を除く): 9811645

約数列:

[1, 5, 13, 43, 65, 89, 113, 215, 445, 559, 565, 1157, 1469, 2795, 3827, 4859, 5785, 7345, 10057, 19135, 24295, 49751, 50285, 63167, 130741, 248755, 315835, 432451, 653705, 2162255, 5621863, 28109315]

約数ペア:

[(1, 28109315), (5, 5621863), (13, 2162255), (43, 653705), (65, 432451), (89, 315835), (113, 248755), (215, 130741), (445, 63167), (559, 50285), (565, 49751), (1157, 24295), (1469, 19135), (2795, 10057), (3827, 7345), (4859, 5785)]