20720623

素因数分解:

$7^1\times {\mathrm{11}}^1\times {\mathrm{59}}^1\times {\mathrm{4561}}^1$

素因数の和:4638

約数の個数: 16

約数和(自身を含む): 26277120

約数和(自身を除く): 5556497

約数列:

[1, 7, 11, 59, 77, 413, 649, 4543, 4561, 31927, 50171, 269099, 351197, 1883693, 2960089, 20720623]

約数ペア:

[(1, 20720623), (7, 2960089), (11, 1883693), (59, 351197), (77, 269099), (413, 50171), (649, 31927), (4543, 4561)]