66732440

素因数分解:

$2^3\times 5^1\times {\mathrm{409}}^1\times {\mathrm{4079}}^1$

素因数の和:4499

約数の個数: 32

約数和(自身を含む): 150552000

約数和(自身を除く): 83819560

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 409, 818, 1636, 2045, 3272, 4079, 4090, 8158, 8180, 16316, 16360, 20395, 32632, 40790, 81580, 163160, 1668311, 3336622, 6673244, 8341555, 13346488, 16683110, 33366220, 66732440]

約数ペア:

[(1, 66732440), (2, 33366220), (4, 16683110), (5, 13346488), (8, 8341555), (10, 6673244), (20, 3336622), (40, 1668311), (409, 163160), (818, 81580), (1636, 40790), (2045, 32632), (3272, 20395), (4079, 16360), (4090, 16316), (8158, 8180)]