21780499

素因数分解:

${\mathrm{13}}^1\times {\mathrm{59}}^1\times {\mathrm{73}}^1\times {\mathrm{389}}^1$

素因数の和:534

約数の個数: 16

約数和(自身を含む): 24242400

約数和(自身を除く): 2461901

約数列:

[1, 13, 59, 73, 389, 767, 949, 4307, 5057, 22951, 28397, 55991, 298363, 369161, 1675423, 21780499]

約数ペア:

[(1, 21780499), (13, 1675423), (59, 369161), (73, 298363), (389, 55991), (767, 28397), (949, 22951), (4307, 5057)]