2558020

素因数分解:

$2^2\times 5^1\times {\mathrm{79}}^1\times {\mathrm{1619}}^1$

素因数の和:1707

約数の個数: 24

約数和(自身を含む): 5443200

約数和(自身を除く): 2885180

約数列:

[1, 2, 4, 5, 10, 20, 79, 158, 316, 395, 790, 1580, 1619, 3238, 6476, 8095, 16190, 32380, 127901, 255802, 511604, 639505, 1279010, 2558020]

約数ペア:

[(1, 2558020), (2, 1279010), (4, 639505), (5, 511604), (10, 255802), (20, 127901), (79, 32380), (158, 16190), (316, 8095), (395, 6476), (790, 3238), (1580, 1619)]