21090279

素因数分解:

$3^1\times 7^1\times {\mathrm{29}}^1\times {\mathrm{34631}}^1$

素因数の和:34670

約数の個数: 16

約数和(自身を含む): 33246720

約数和(自身を除く): 12156441

約数列:

[1, 3, 7, 21, 29, 87, 203, 609, 34631, 103893, 242417, 727251, 1004299, 3012897, 7030093, 21090279]

約数ペア:

[(1, 21090279), (3, 7030093), (7, 3012897), (21, 1004299), (29, 727251), (87, 242417), (203, 103893), (609, 34631)]