21459291

素因数分解:

$3^1\times 7^1\times {\mathrm{613}}^1\times {\mathrm{1667}}^1$

素因数の和:2290

約数の個数: 16

約数和(自身を含む): 32772864

約数和(自身を除く): 11313573

約数列:

[1, 3, 7, 21, 613, 1667, 1839, 4291, 5001, 11669, 12873, 35007, 1021871, 3065613, 7153097, 21459291]

約数ペア:

[(1, 21459291), (3, 7153097), (7, 3065613), (21, 1021871), (613, 35007), (1667, 12873), (1839, 11669), (4291, 5001)]