40640

素因数分解:

$2^6\times 5^1\times {\mathrm{127}}^1$

素因数の和:144

約数の個数: 28

約数和(自身を含む): 97536

約数和(自身を除く): 56896

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 127, 160, 254, 320, 508, 635, 1016, 1270, 2032, 2540, 4064, 5080, 8128, 10160, 20320, 40640]

約数ペア:

[(1, 40640), (2, 20320), (4, 10160), (5, 8128), (8, 5080), (10, 4064), (16, 2540), (20, 2032), (32, 1270), (40, 1016), (64, 635), (80, 508), (127, 320), (160, 254)]