40668640

素因数分解:

$2^5\times 5^1\times {\mathrm{254179}}^1$

素因数の和:254194

約数の個数: 24

約数和(自身を含む): 96080040

約数和(自身を除く): 55411400

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 80, 160, 254179, 508358, 1016716, 1270895, 2033432, 2541790, 4066864, 5083580, 8133728, 10167160, 20334320, 40668640]

約数ペア:

[(1, 40668640), (2, 20334320), (4, 10167160), (5, 8133728), (8, 5083580), (10, 4066864), (16, 2541790), (20, 2033432), (32, 1270895), (40, 1016716), (80, 508358), (160, 254179)]