639018580

素因数分解:

$2^2\times 5^1\times {\mathrm{47}}^1\times {\mathrm{679807}}^1$

素因数の和:679863

約数の個数: 24

約数和(自身を含む): 1370492928

約数和(自身を除く): 731474348

約数列:

[1, 2, 4, 5, 10, 20, 47, 94, 188, 235, 470, 940, 679807, 1359614, 2719228, 3399035, 6798070, 13596140, 31950929, 63901858, 127803716, 159754645, 319509290, 639018580]

約数ペア:

[(1, 639018580), (2, 319509290), (4, 159754645), (5, 127803716), (10, 63901858), (20, 31950929), (47, 13596140), (94, 6798070), (188, 3399035), (235, 2719228), (470, 1359614), (940, 679807)]