28652905

素因数分解:

$5^1\times {\mathrm{17}}^2\times {\mathrm{79}}^1\times {\mathrm{251}}^1$

素因数の和:369

約数の個数: 24

約数和(自身を含む): 37134720

約数和(自身を除く): 8481815

約数列:

[1, 5, 17, 79, 85, 251, 289, 395, 1255, 1343, 1445, 4267, 6715, 19829, 21335, 22831, 72539, 99145, 114155, 337093, 362695, 1685465, 5730581, 28652905]

約数ペア:

[(1, 28652905), (5, 5730581), (17, 1685465), (79, 362695), (85, 337093), (251, 114155), (289, 99145), (395, 72539), (1255, 22831), (1343, 21335), (1445, 19829), (4267, 6715)]