90445640

素因数分解:

$2^3\times 5^1\times {\mathrm{487}}^1\times {\mathrm{4643}}^1$

素因数の和:5141

約数の個数: 32

約数和(自身を含む): 203964480

約数和(自身を除く): 113518840

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 487, 974, 1948, 2435, 3896, 4643, 4870, 9286, 9740, 18572, 19480, 23215, 37144, 46430, 92860, 185720, 2261141, 4522282, 9044564, 11305705, 18089128, 22611410, 45222820, 90445640]

約数ペア:

[(1, 90445640), (2, 45222820), (4, 22611410), (5, 18089128), (8, 11305705), (10, 9044564), (20, 4522282), (40, 2261141), (487, 185720), (974, 92860), (1948, 46430), (2435, 37144), (3896, 23215), (4643, 19480), (4870, 18572), (9286, 9740)]