21694491

素因数分解:

$3^2\times 7^1\times {\mathrm{13}}^1\times {\mathrm{26489}}^1$

素因数の和:26515

約数の個数: 24

約数和(自身を含む): 38569440

約数和(自身を除く): 16874949

約数列:

[1, 3, 7, 9, 13, 21, 39, 63, 91, 117, 273, 819, 26489, 79467, 185423, 238401, 344357, 556269, 1033071, 1668807, 2410499, 3099213, 7231497, 21694491]

約数ペア:

[(1, 21694491), (3, 7231497), (7, 3099213), (9, 2410499), (13, 1668807), (21, 1033071), (39, 556269), (63, 344357), (91, 238401), (117, 185423), (273, 79467), (819, 26489)]