641220620

素因数分解:

$2^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{1885943}}^1$

素因数の和:1885969

約数の個数: 24

約数和(自身を含む): 1425773664

約数和(自身を除く): 784553044

約数列:

[1, 2, 4, 5, 10, 17, 20, 34, 68, 85, 170, 340, 1885943, 3771886, 7543772, 9429715, 18859430, 32061031, 37718860, 64122062, 128244124, 160305155, 320610310, 641220620]

約数ペア:

[(1, 641220620), (2, 320610310), (4, 160305155), (5, 128244124), (10, 64122062), (17, 37718860), (20, 32061031), (34, 18859430), (68, 9429715), (85, 7543772), (170, 3771886), (340, 1885943)]