21306879

素因数分解:

$3^2\times {\mathrm{11}}^1\times {\mathrm{373}}^1\times {\mathrm{577}}^1$

素因数の和:967

約数の個数: 24

約数和(自身を含む): 33722832

約数和(自身を除く): 12415953

約数列:

[1, 3, 9, 11, 33, 99, 373, 577, 1119, 1731, 3357, 4103, 5193, 6347, 12309, 19041, 36927, 57123, 215221, 645663, 1936989, 2367431, 7102293, 21306879]

約数ペア:

[(1, 21306879), (3, 7102293), (9, 2367431), (11, 1936989), (33, 645663), (99, 215221), (373, 57123), (577, 36927), (1119, 19041), (1731, 12309), (3357, 6347), (4103, 5193)]