81867175

素因数分解:

$5^2\times {\mathrm{13}}^1\times {\mathrm{109}}^1\times {\mathrm{2311}}^1$

素因数の和:2443

約数の個数: 24

約数和(自身を含む): 110374880

約数和(自身を除く): 28507705

約数列:

[1, 5, 13, 25, 65, 109, 325, 545, 1417, 2311, 2725, 7085, 11555, 30043, 35425, 57775, 150215, 251899, 751075, 1259495, 3274687, 6297475, 16373435, 81867175]

約数ペア:

[(1, 81867175), (5, 16373435), (13, 6297475), (25, 3274687), (65, 1259495), (109, 751075), (325, 251899), (545, 150215), (1417, 57775), (2311, 35425), (2725, 30043), (7085, 11555)]