12928640

素因数分解:

$2^7\times 5^1\times {\mathrm{20201}}^1$

素因数の和:20220

約数の個数: 32

約数和(自身を含む): 30909060

約数和(自身を除く): 17980420

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 320, 640, 20201, 40402, 80804, 101005, 161608, 202010, 323216, 404020, 646432, 808040, 1292864, 1616080, 2585728, 3232160, 6464320, 12928640]

約数ペア:

[(1, 12928640), (2, 6464320), (4, 3232160), (5, 2585728), (8, 1616080), (10, 1292864), (16, 808040), (20, 646432), (32, 404020), (40, 323216), (64, 202010), (80, 161608), (128, 101005), (160, 80804), (320, 40402), (640, 20201)]