21697767

素因数分解:

$3^3\times 7^1\times {\mathrm{13}}^1\times {\mathrm{8831}}^1$

素因数の和:8860

約数の個数: 32

約数和(自身を含む): 39567360

約数和(自身を除く): 17869593

約数列:

[1, 3, 7, 9, 13, 21, 27, 39, 63, 91, 117, 189, 273, 351, 819, 2457, 8831, 26493, 61817, 79479, 114803, 185451, 238437, 344409, 556353, 803621, 1033227, 1669059, 2410863, 3099681, 7232589, 21697767]

約数ペア:

[(1, 21697767), (3, 7232589), (7, 3099681), (9, 2410863), (13, 1669059), (21, 1033227), (27, 803621), (39, 556353), (63, 344409), (91, 238437), (117, 185451), (189, 114803), (273, 79479), (351, 61817), (819, 26493), (2457, 8831)]