21657777

素因数分解:

$3^1\times {\mathrm{19}}^1\times {\mathrm{409}}^1\times {\mathrm{929}}^1$

素因数の和:1360

約数の個数: 16

約数和(自身を含む): 30504000

約数和(自身を除く): 8846223

約数列:

[1, 3, 19, 57, 409, 929, 1227, 2787, 7771, 17651, 23313, 52953, 379961, 1139883, 7219259, 21657777]

約数ペア:

[(1, 21657777), (3, 7219259), (19, 1139883), (57, 379961), (409, 52953), (929, 23313), (1227, 17651), (2787, 7771)]