18196775

素因数分解:

$5^2\times {\mathrm{19}}^1\times {\mathrm{29}}^1\times {\mathrm{1321}}^1$

素因数の和:1379

約数の個数: 24

約数和(自身を含む): 24589200

約数和(自身を除く): 6392425

約数列:

[1, 5, 19, 25, 29, 95, 145, 475, 551, 725, 1321, 2755, 6605, 13775, 25099, 33025, 38309, 125495, 191545, 627475, 727871, 957725, 3639355, 18196775]

約数ペア:

[(1, 18196775), (5, 3639355), (19, 957725), (25, 727871), (29, 627475), (95, 191545), (145, 125495), (475, 38309), (551, 33025), (725, 25099), (1321, 13775), (2755, 6605)]