20657211

素因数分解:

$3^1\times {\mathrm{37}}^1\times {\mathrm{149}}^1\times {\mathrm{1249}}^1$

素因数の和:1438

約数の個数: 16

約数和(自身を含む): 28500000

約数和(自身を除く): 7842789

約数列:

[1, 3, 37, 111, 149, 447, 1249, 3747, 5513, 16539, 46213, 138639, 186101, 558303, 6885737, 20657211]

約数ペア:

[(1, 20657211), (3, 6885737), (37, 558303), (111, 186101), (149, 138639), (447, 46213), (1249, 16539), (3747, 5513)]