28951255

素因数分解:

$5^1\times {\mathrm{17}}^1\times {\mathrm{43}}^1\times {\mathrm{89}}^2$

素因数の和:243

約数の個数: 24

約数和(自身を含む): 38068272

約数和(自身を除く): 9117017

約数列:

[1, 5, 17, 43, 85, 89, 215, 445, 731, 1513, 3655, 3827, 7565, 7921, 19135, 39605, 65059, 134657, 325295, 340603, 673285, 1703015, 5790251, 28951255]

約数ペア:

[(1, 28951255), (5, 5790251), (17, 1703015), (43, 673285), (85, 340603), (89, 325295), (215, 134657), (445, 65059), (731, 39605), (1513, 19135), (3655, 7921), (3827, 7565)]