19902613

素因数分解:

${\mathrm{23}}^1\times {\mathrm{29}}^1\times {\mathrm{53}}^1\times {\mathrm{563}}^1$

素因数の和:668

約数の個数: 16

約数和(自身を含む): 21928320

約数和(自身を除く): 2025707

約数列:

[1, 23, 29, 53, 563, 667, 1219, 1537, 12949, 16327, 29839, 35351, 375521, 686297, 865331, 19902613]

約数ペア:

[(1, 19902613), (23, 865331), (29, 686297), (53, 375521), (563, 35351), (667, 29839), (1219, 16327), (1537, 12949)]