18707408

素因数分解:

$2^4\times {\mathrm{43}}^1\times {\mathrm{27191}}^1$

素因数の和:27242

約数の個数: 20

約数和(自身を含む): 37089888

約数和(自身を除く): 18382480

約数列:

[1, 2, 4, 8, 16, 43, 86, 172, 344, 688, 27191, 54382, 108764, 217528, 435056, 1169213, 2338426, 4676852, 9353704, 18707408]

約数ペア:

[(1, 18707408), (2, 9353704), (4, 4676852), (8, 2338426), (16, 1169213), (43, 435056), (86, 217528), (172, 108764), (344, 54382), (688, 27191)]