20413939

素因数分解:

$7^2\times {\mathrm{13}}^1\times {\mathrm{73}}^1\times {\mathrm{439}}^1$

素因数の和:539

約数の個数: 24

約数和(自身を含む): 25982880

約数和(自身を除く): 5568941

約数列:

[1, 7, 13, 49, 73, 91, 439, 511, 637, 949, 3073, 3577, 5707, 6643, 21511, 32047, 39949, 46501, 224329, 279643, 416611, 1570303, 2916277, 20413939]

約数ペア:

[(1, 20413939), (7, 2916277), (13, 1570303), (49, 416611), (73, 279643), (91, 224329), (439, 46501), (511, 39949), (637, 32047), (949, 21511), (3073, 6643), (3577, 5707)]