17920289

素因数分解:

${\mathrm{23}}^1\times {\mathrm{29}}^1\times {\mathrm{67}}^1\times {\mathrm{401}}^1$

素因数の和:520

約数の個数: 16

約数和(自身を含む): 19681920

約数和(自身を除く): 1761631

約数列:

[1, 23, 29, 67, 401, 667, 1541, 1943, 9223, 11629, 26867, 44689, 267467, 617941, 779143, 17920289]

約数ペア:

[(1, 17920289), (23, 779143), (29, 617941), (67, 267467), (401, 44689), (667, 26867), (1541, 11629), (1943, 9223)]