18667675

素因数分解:

$5^2\times {\mathrm{13}}^1\times {\mathrm{71}}^1\times {\mathrm{809}}^1$

素因数の和:903

約数の個数: 24

約数和(自身を含む): 25310880

約数和(自身を除く): 6643205

約数列:

[1, 5, 13, 25, 65, 71, 325, 355, 809, 923, 1775, 4045, 4615, 10517, 20225, 23075, 52585, 57439, 262925, 287195, 746707, 1435975, 3733535, 18667675]

約数ペア:

[(1, 18667675), (5, 3733535), (13, 1435975), (25, 746707), (65, 287195), (71, 262925), (325, 57439), (355, 52585), (809, 23075), (923, 20225), (1775, 10517), (4045, 4615)]