21751029

素因数分解:

$3^2\times {\mathrm{19}}^1\times {\mathrm{311}}^1\times {\mathrm{409}}^1$

素因数の和:745

約数の個数: 24

約数和(自身を含む): 33259200

約数和(自身を除く): 11508171

約数列:

[1, 3, 9, 19, 57, 171, 311, 409, 933, 1227, 2799, 3681, 5909, 7771, 17727, 23313, 53181, 69939, 127199, 381597, 1144791, 2416781, 7250343, 21751029]

約数ペア:

[(1, 21751029), (3, 7250343), (9, 2416781), (19, 1144791), (57, 381597), (171, 127199), (311, 69939), (409, 53181), (933, 23313), (1227, 17727), (2799, 7771), (3681, 5909)]