20608815

素因数分解:

$3^1\times 5^1\times {\mathrm{37}}^1\times {\mathrm{71}}^1\times {\mathrm{523}}^1$

素因数の和:639

約数の個数: 32

約数和(自身を含む): 34407936

約数和(自身を除く): 13799121

約数列:

[1, 3, 5, 15, 37, 71, 111, 185, 213, 355, 523, 555, 1065, 1569, 2615, 2627, 7845, 7881, 13135, 19351, 37133, 39405, 58053, 96755, 111399, 185665, 290265, 556995, 1373921, 4121763, 6869605, 20608815]

約数ペア:

[(1, 20608815), (3, 6869605), (5, 4121763), (15, 1373921), (37, 556995), (71, 290265), (111, 185665), (185, 111399), (213, 96755), (355, 58053), (523, 39405), (555, 37133), (1065, 19351), (1569, 13135), (2615, 7881), (2627, 7845)]