128420747

素因数分解:

$7^1\times {\mathrm{13}}^1\times {\mathrm{37}}^1\times {\mathrm{43}}^1\times {\mathrm{887}}^1$

素因数の和:987

約数の個数: 32

約数和(自身を含む): 166290432

約数和(自身を除く): 37869685

約数列:

[1, 7, 13, 37, 43, 91, 259, 301, 481, 559, 887, 1591, 3367, 3913, 6209, 11137, 11531, 20683, 32819, 38141, 80717, 144781, 229733, 266987, 426647, 495833, 1411217, 2986529, 3470831, 9878519, 18345821, 128420747]

約数ペア:

[(1, 128420747), (7, 18345821), (13, 9878519), (37, 3470831), (43, 2986529), (91, 1411217), (259, 495833), (301, 426647), (481, 266987), (559, 229733), (887, 144781), (1591, 80717), (3367, 38141), (3913, 32819), (6209, 20683), (11137, 11531)]