18820375

素因数分解:

$5^3\times 7^1\times {\mathrm{137}}^1\times {\mathrm{157}}^1$

素因数の和:316

約数の個数: 32

約数和(自身を含む): 27211392

約数和(自身を除く): 8391017

約数列:

[1, 5, 7, 25, 35, 125, 137, 157, 175, 685, 785, 875, 959, 1099, 3425, 3925, 4795, 5495, 17125, 19625, 21509, 23975, 27475, 107545, 119875, 137375, 150563, 537725, 752815, 2688625, 3764075, 18820375]

約数ペア:

[(1, 18820375), (5, 3764075), (7, 2688625), (25, 752815), (35, 537725), (125, 150563), (137, 137375), (157, 119875), (175, 107545), (685, 27475), (785, 23975), (875, 21509), (959, 19625), (1099, 17125), (3425, 5495), (3925, 4795)]