20539805

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{1249}}^1$

素因数の和:1301

約数の個数: 32

約数和(自身を含む): 30240000

約数和(自身を除く): 9700195

約数列:

[1, 5, 11, 13, 23, 55, 65, 115, 143, 253, 299, 715, 1249, 1265, 1495, 3289, 6245, 13739, 16237, 16445, 28727, 68695, 81185, 143635, 178607, 315997, 373451, 893035, 1579985, 1867255, 4107961, 20539805]

約数ペア:

[(1, 20539805), (5, 4107961), (11, 1867255), (13, 1579985), (23, 893035), (55, 373451), (65, 315997), (115, 178607), (143, 143635), (253, 81185), (299, 68695), (715, 28727), (1249, 16445), (1265, 16237), (1495, 13739), (3289, 6245)]