21698391

素因数分解:

$3^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{37}}^1\times {\mathrm{1367}}^1$

素因数の和:1431

約数の個数: 32

約数和(自身を含む): 34933248

約数和(自身を除く): 13234857

約数列:

[1, 3, 11, 13, 33, 37, 39, 111, 143, 407, 429, 481, 1221, 1367, 1443, 4101, 5291, 15037, 15873, 17771, 45111, 50579, 53313, 151737, 195481, 556369, 586443, 657527, 1669107, 1972581, 7232797, 21698391]

約数ペア:

[(1, 21698391), (3, 7232797), (11, 1972581), (13, 1669107), (33, 657527), (37, 586443), (39, 556369), (111, 195481), (143, 151737), (407, 53313), (429, 50579), (481, 45111), (1221, 17771), (1367, 15873), (1443, 15037), (4101, 5291)]