21207109

素因数分解:

$7^1\times {\mathrm{11}}^1\times {\mathrm{17}}^2\times {\mathrm{953}}^1$

素因数の和:1005

約数の個数: 24

約数和(自身を含む): 28116288

約数和(自身を除く): 6909179

約数列:

[1, 7, 11, 17, 77, 119, 187, 289, 953, 1309, 2023, 3179, 6671, 10483, 16201, 22253, 73381, 113407, 178211, 275417, 1247477, 1927919, 3029587, 21207109]

約数ペア:

[(1, 21207109), (7, 3029587), (11, 1927919), (17, 1247477), (77, 275417), (119, 178211), (187, 113407), (289, 73381), (953, 22253), (1309, 16201), (2023, 10483), (3179, 6671)]