638918889

素因数分解:

$3^1\times 7^2\times {\mathrm{317}}^1\times {\mathrm{13711}}^1$

素因数の和:14045

約数の個数: 24

約数和(自身を含む): 994174848

約数和(自身を除く): 355255959

約数列:

[1, 3, 7, 21, 49, 147, 317, 951, 2219, 6657, 13711, 15533, 41133, 46599, 95977, 287931, 671839, 2015517, 4346387, 13039161, 30424709, 91274127, 212972963, 638918889]

約数ペア:

[(1, 638918889), (3, 212972963), (7, 91274127), (21, 30424709), (49, 13039161), (147, 4346387), (317, 2015517), (951, 671839), (2219, 287931), (6657, 95977), (13711, 46599), (15533, 41133)]