2891875

素因数分解:

$5^4\times 7^1\times {\mathrm{661}}^1$

素因数の和:688

約数の個数: 20

約数和(自身を含む): 4136176

約数和(自身を除く): 1244301

約数列:

[1, 5, 7, 25, 35, 125, 175, 625, 661, 875, 3305, 4375, 4627, 16525, 23135, 82625, 115675, 413125, 578375, 2891875]

約数ペア:

[(1, 2891875), (5, 578375), (7, 413125), (25, 115675), (35, 82625), (125, 23135), (175, 16525), (625, 4627), (661, 4375), (875, 3305)]