21705453

素因数分解:

$3^2\times 7^1\times {\mathrm{11}}^1\times {\mathrm{31321}}^1$

素因数の和:31345

約数の個数: 24

約数和(自身を含む): 39089856

約数和(自身を除く): 17384403

約数列:

[1, 3, 7, 9, 11, 21, 33, 63, 77, 99, 231, 693, 31321, 93963, 219247, 281889, 344531, 657741, 1033593, 1973223, 2411717, 3100779, 7235151, 21705453]

約数ペア:

[(1, 21705453), (3, 7235151), (7, 3100779), (9, 2411717), (11, 1973223), (21, 1033593), (33, 657741), (63, 344531), (77, 281889), (99, 219247), (231, 93963), (693, 31321)]