64213640

素因数分解:

$2^3\times 5^1\times {\mathrm{1605341}}^1$

素因数の和:1605352

約数の個数: 16

約数和(自身を含む): 144480780

約数和(自身を除く): 80267140

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 1605341, 3210682, 6421364, 8026705, 12842728, 16053410, 32106820, 64213640]

約数ペア:

[(1, 64213640), (2, 32106820), (4, 16053410), (5, 12842728), (8, 8026705), (10, 6421364), (20, 3210682), (40, 1605341)]