81106640

素因数分解:

$2^4\times 5^1\times {\mathrm{1013833}}^1$

素因数の和:1013846

約数の個数: 20

約数和(自身を含む): 188573124

約数和(自身を除く): 107466484

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 1013833, 2027666, 4055332, 5069165, 8110664, 10138330, 16221328, 20276660, 40553320, 81106640]

約数ペア:

[(1, 81106640), (2, 40553320), (4, 20276660), (5, 16221328), (8, 10138330), (10, 8110664), (16, 5069165), (20, 4055332), (40, 2027666), (80, 1013833)]