66354520

素因数分解:

$2^3\times 5^1\times {\mathrm{1279}}^1\times {\mathrm{1297}}^1$

素因数の和:2587

約数の個数: 32

約数和(自身を含む): 149529600

約数和(自身を除く): 83175080

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 1279, 1297, 2558, 2594, 5116, 5188, 6395, 6485, 10232, 10376, 12790, 12970, 25580, 25940, 51160, 51880, 1658863, 3317726, 6635452, 8294315, 13270904, 16588630, 33177260, 66354520]

約数ペア:

[(1, 66354520), (2, 33177260), (4, 16588630), (5, 13270904), (8, 8294315), (10, 6635452), (20, 3317726), (40, 1658863), (1279, 51880), (1297, 51160), (2558, 25940), (2594, 25580), (5116, 12970), (5188, 12790), (6395, 10376), (6485, 10232)]