18220730

素因数分解:

$2^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{71}}^1\times {\mathrm{2333}}^1$

素因数の和:2422

約数の個数: 32

約数和(自身を含む): 36298368

約数和(自身を除く): 18077638

約数列:

[1, 2, 5, 10, 11, 22, 55, 71, 110, 142, 355, 710, 781, 1562, 2333, 3905, 4666, 7810, 11665, 23330, 25663, 51326, 128315, 165643, 256630, 331286, 828215, 1656430, 1822073, 3644146, 9110365, 18220730]

約数ペア:

[(1, 18220730), (2, 9110365), (5, 3644146), (10, 1822073), (11, 1656430), (22, 828215), (55, 331286), (71, 256630), (110, 165643), (142, 128315), (355, 51326), (710, 25663), (781, 23330), (1562, 11665), (2333, 7810), (3905, 4666)]