21968973

素因数分解:

$3^2\times {\mathrm{13}}^1\times {\mathrm{103}}^1\times {\mathrm{1823}}^1$

素因数の和:1945

約数の個数: 24

約数和(自身を含む): 34524672

約数和(自身を除く): 12555699

約数列:

[1, 3, 9, 13, 39, 103, 117, 309, 927, 1339, 1823, 4017, 5469, 12051, 16407, 23699, 71097, 187769, 213291, 563307, 1689921, 2440997, 7322991, 21968973]

約数ペア:

[(1, 21968973), (3, 7322991), (9, 2440997), (13, 1689921), (39, 563307), (103, 213291), (117, 187769), (309, 71097), (927, 23699), (1339, 16407), (1823, 12051), (4017, 5469)]