28321503

素因数分解:

$3^1\times 7^1\times {\mathrm{67}}^1\times {\mathrm{20129}}^1$

素因数の和:20206

約数の個数: 16

約数和(自身を含む): 43802880

約数和(自身を除く): 15481377

約数列:

[1, 3, 7, 21, 67, 201, 469, 1407, 20129, 60387, 140903, 422709, 1348643, 4045929, 9440501, 28321503]

約数ペア:

[(1, 28321503), (3, 9440501), (7, 4045929), (21, 1348643), (67, 422709), (201, 140903), (469, 60387), (1407, 20129)]