639830020

素因数分解:

$2^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{1881853}}^1$

素因数の和:1881879

約数の個数: 24

約数和(自身を含む): 1422681624

約数和(自身を除く): 782851604

約数列:

[1, 2, 4, 5, 10, 17, 20, 34, 68, 85, 170, 340, 1881853, 3763706, 7527412, 9409265, 18818530, 31991501, 37637060, 63983002, 127966004, 159957505, 319915010, 639830020]

約数ペア:

[(1, 639830020), (2, 319915010), (4, 159957505), (5, 127966004), (10, 63983002), (17, 37637060), (20, 31991501), (34, 18818530), (68, 9409265), (85, 7527412), (170, 3763706), (340, 1881853)]