21516845

素因数分解:

$5^1\times 7^1\times {\mathrm{23}}^1\times {\mathrm{26729}}^1$

素因数の和:26764

約数の個数: 16

約数和(自身を含む): 30792960

約数和(自身を除く): 9276115

約数列:

[1, 5, 7, 23, 35, 115, 161, 805, 26729, 133645, 187103, 614767, 935515, 3073835, 4303369, 21516845]

約数ペア:

[(1, 21516845), (5, 4303369), (7, 3073835), (23, 935515), (35, 614767), (115, 187103), (161, 133645), (805, 26729)]