81261710

素因数分解:

$2^1\times 5^1\times {\mathrm{2003}}^1\times {\mathrm{4057}}^1$

素因数の和:6067

約数の個数: 16

約数和(自身を含む): 146380176

約数和(自身を除く): 65118466

約数列:

[1, 2, 5, 10, 2003, 4006, 4057, 8114, 10015, 20030, 20285, 40570, 8126171, 16252342, 40630855, 81261710]

約数ペア:

[(1, 81261710), (2, 40630855), (5, 16252342), (10, 8126171), (2003, 40570), (4006, 20285), (4057, 20030), (8114, 10015)]