21807513

素因数分解:

$3^2\times 7^1\times {\mathrm{13}}^1\times {\mathrm{26627}}^1$

素因数の和:26653

約数の個数: 24

約数和(自身を含む): 38770368

約数和(自身を除く): 16962855

約数列:

[1, 3, 7, 9, 13, 21, 39, 63, 91, 117, 273, 819, 26627, 79881, 186389, 239643, 346151, 559167, 1038453, 1677501, 2423057, 3115359, 7269171, 21807513]

約数ペア:

[(1, 21807513), (3, 7269171), (7, 3115359), (9, 2423057), (13, 1677501), (21, 1038453), (39, 559167), (63, 346151), (91, 239643), (117, 186389), (273, 79881), (819, 26627)]