21221847

素因数分解:

$3^2\times {\mathrm{23}}^1\times {\mathrm{157}}^1\times {\mathrm{653}}^1$

素因数の和:839

約数の個数: 24

約数和(自身を含む): 32239584

約数和(自身を除く): 11017737

約数列:

[1, 3, 9, 23, 69, 157, 207, 471, 653, 1413, 1959, 3611, 5877, 10833, 15019, 32499, 45057, 102521, 135171, 307563, 922689, 2357983, 7073949, 21221847]

約数ペア:

[(1, 21221847), (3, 7073949), (9, 2357983), (23, 922689), (69, 307563), (157, 135171), (207, 102521), (471, 45057), (653, 32499), (1413, 15019), (1959, 10833), (3611, 5877)]