28487921

素因数分解:

$7^1\times {\mathrm{11}}^1\times {\mathrm{89}}^1\times {\mathrm{4157}}^1$

素因数の和:4264

約数の個数: 16

約数和(自身を含む): 35925120

約数和(自身を除く): 7437199

約数列:

[1, 7, 11, 77, 89, 623, 979, 4157, 6853, 29099, 45727, 320089, 369973, 2589811, 4069703, 28487921]

約数ペア:

[(1, 28487921), (7, 4069703), (11, 2589811), (77, 369973), (89, 320089), (623, 45727), (979, 29099), (4157, 6853)]