21988083

素因数分解:

$3^1\times {\mathrm{13}}^2\times {\mathrm{31}}^1\times {\mathrm{1399}}^1$

素因数の和:1459

約数の個数: 24

約数和(自身を含む): 32793600

約数和(自身を除く): 10805517

約数列:

[1, 3, 13, 31, 39, 93, 169, 403, 507, 1209, 1399, 4197, 5239, 15717, 18187, 43369, 54561, 130107, 236431, 563797, 709293, 1691391, 7329361, 21988083]

約数ペア:

[(1, 21988083), (3, 7329361), (13, 1691391), (31, 709293), (39, 563797), (93, 236431), (169, 130107), (403, 54561), (507, 43369), (1209, 18187), (1399, 15717), (4197, 5239)]