18686875

素因数分解:

$5^4\times {\mathrm{29}}^1\times {\mathrm{1031}}^1$

素因数の和:1080

約数の個数: 20

約数和(自身を含む): 24179760

約数和(自身を除く): 5492885

約数列:

[1, 5, 25, 29, 125, 145, 625, 725, 1031, 3625, 5155, 18125, 25775, 29899, 128875, 149495, 644375, 747475, 3737375, 18686875]

約数ペア:

[(1, 18686875), (5, 3737375), (25, 747475), (29, 644375), (125, 149495), (145, 128875), (625, 29899), (725, 25775), (1031, 18125), (3625, 5155)]