20567015

素因数分解:

$5^1\times 7^2\times {\mathrm{127}}^1\times {\mathrm{661}}^1$

素因数の和:807

約数の個数: 24

約数和(自身を含む): 28979712

約数和(自身を除く): 8412697

約数列:

[1, 5, 7, 35, 49, 127, 245, 635, 661, 889, 3305, 4445, 4627, 6223, 23135, 31115, 32389, 83947, 161945, 419735, 587629, 2938145, 4113403, 20567015]

約数ペア:

[(1, 20567015), (5, 4113403), (7, 2938145), (35, 587629), (49, 419735), (127, 161945), (245, 83947), (635, 32389), (661, 31115), (889, 23135), (3305, 6223), (4445, 4627)]