21004081

素因数分解:

$7^1\times {\mathrm{31}}^1\times {\mathrm{43}}^1\times {\mathrm{2251}}^1$

素因数の和:2332

約数の個数: 16

約数和(自身を含む): 25366528

約数和(自身を除く): 4362447

約数列:

[1, 7, 31, 43, 217, 301, 1333, 2251, 9331, 15757, 69781, 96793, 488467, 677551, 3000583, 21004081]

約数ペア:

[(1, 21004081), (7, 3000583), (31, 677551), (43, 488467), (217, 96793), (301, 69781), (1333, 15757), (2251, 9331)]