20988407

素因数分解:

${\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{233}}^1\times {\mathrm{431}}^1$

素因数の和:694

約数の個数: 16

約数和(自身を含む): 24261120

約数和(自身を除く): 3272713

約数列:

[1, 11, 19, 209, 233, 431, 2563, 4427, 4741, 8189, 48697, 90079, 100423, 1104653, 1908037, 20988407]

約数ペア:

[(1, 20988407), (11, 1908037), (19, 1104653), (209, 100423), (233, 90079), (431, 48697), (2563, 8189), (4427, 4741)]