642020

素因数分解:

$2^2\times 5^1\times {\mathrm{47}}^1\times {\mathrm{683}}^1$

素因数の和:739

約数の個数: 24

約数和(自身を含む): 1378944

約数和(自身を除く): 736924

約数列:

[1, 2, 4, 5, 10, 20, 47, 94, 188, 235, 470, 683, 940, 1366, 2732, 3415, 6830, 13660, 32101, 64202, 128404, 160505, 321010, 642020]

約数ペア:

[(1, 642020), (2, 321010), (4, 160505), (5, 128404), (10, 64202), (20, 32101), (47, 13660), (94, 6830), (188, 3415), (235, 2732), (470, 1366), (683, 940)]