21623199

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{571}}^1\times {\mathrm{971}}^1$

素因数の和:1558

約数の個数: 16

約数和(自身を含む): 31135104

約数和(自身を除く): 9511905

約数列:

[1, 3, 13, 39, 571, 971, 1713, 2913, 7423, 12623, 22269, 37869, 554441, 1663323, 7207733, 21623199]

約数ペア:

[(1, 21623199), (3, 7207733), (13, 1663323), (39, 554441), (571, 37869), (971, 22269), (1713, 12623), (2913, 7423)]