21015001

素因数分解:

$7^1\times {\mathrm{37}}^1\times {\mathrm{41}}^1\times {\mathrm{1979}}^1$

素因数の和:2064

約数の個数: 16

約数和(自身を含む): 25280640

約数和(自身を除く): 4265639

約数列:

[1, 7, 37, 41, 259, 287, 1517, 1979, 10619, 13853, 73223, 81139, 512561, 567973, 3002143, 21015001]

約数ペア:

[(1, 21015001), (7, 3002143), (37, 567973), (41, 512561), (259, 81139), (287, 73223), (1517, 13853), (1979, 10619)]