21798716

素因数分解:

$2^2\times {\mathrm{41}}^1\times {\mathrm{61}}^1\times {\mathrm{2179}}^1$

素因数の和:2285

約数の個数: 24

約数和(自身を含む): 39737040

約数和(自身を除く): 17938324

約数列:

[1, 2, 4, 41, 61, 82, 122, 164, 244, 2179, 2501, 4358, 5002, 8716, 10004, 89339, 132919, 178678, 265838, 357356, 531676, 5449679, 10899358, 21798716]

約数ペア:

[(1, 21798716), (2, 10899358), (4, 5449679), (41, 531676), (61, 357356), (82, 265838), (122, 178678), (164, 132919), (244, 89339), (2179, 10004), (2501, 8716), (4358, 5002)]