21236245

素因数分解:

$5^1\times {\mathrm{23}}^1\times {\mathrm{47}}^1\times {\mathrm{3929}}^1$

素因数の和:4004

約数の個数: 16

約数和(自身を含む): 27164160

約数和(自身を除く): 5927915

約数列:

[1, 5, 23, 47, 115, 235, 1081, 3929, 5405, 19645, 90367, 184663, 451835, 923315, 4247249, 21236245]

約数ペア:

[(1, 21236245), (5, 4247249), (23, 923315), (47, 451835), (115, 184663), (235, 90367), (1081, 19645), (3929, 5405)]