17921379

素因数分解:

$3^1\times 7^1\times {\mathrm{31}}^1\times {\mathrm{27529}}^1$

素因数の和:27570

約数の個数: 16

約数和(自身を含む): 28190720

約数和(自身を除く): 10269341

約数列:

[1, 3, 7, 21, 31, 93, 217, 651, 27529, 82587, 192703, 578109, 853399, 2560197, 5973793, 17921379]

約数ペア:

[(1, 17921379), (3, 5973793), (7, 2560197), (21, 853399), (31, 578109), (93, 192703), (217, 82587), (651, 27529)]