19998925

素因数分解:

$5^2\times {\mathrm{19}}^1\times {\mathrm{71}}^1\times {\mathrm{593}}^1$

素因数の和:693

約数の個数: 24

約数和(自身を含む): 26516160

約数和(自身を除く): 6517235

約数列:

[1, 5, 19, 25, 71, 95, 355, 475, 593, 1349, 1775, 2965, 6745, 11267, 14825, 33725, 42103, 56335, 210515, 281675, 799957, 1052575, 3999785, 19998925]

約数ペア:

[(1, 19998925), (5, 3999785), (19, 1052575), (25, 799957), (71, 281675), (95, 210515), (355, 56335), (475, 42103), (593, 33725), (1349, 14825), (1775, 11267), (2965, 6745)]