2813125

素因数分解:

$5^4\times 7^1\times {\mathrm{643}}^1$

素因数の和:670

約数の個数: 20

約数和(自身を含む): 4023712

約数和(自身を除く): 1210587

約数列:

[1, 5, 7, 25, 35, 125, 175, 625, 643, 875, 3215, 4375, 4501, 16075, 22505, 80375, 112525, 401875, 562625, 2813125]

約数ペア:

[(1, 2813125), (5, 562625), (7, 401875), (25, 112525), (35, 80375), (125, 22505), (175, 16075), (625, 4501), (643, 4375), (875, 3215)]