40354839

素因数分解:

$3^2\times 7^1\times {\mathrm{31}}^1\times {\mathrm{20663}}^1$

素因数の和:20707

約数の個数: 24

約数和(自身を含む): 68769792

約数和(自身を除く): 28414953

約数列:

[1, 3, 7, 9, 21, 31, 63, 93, 217, 279, 651, 1953, 20663, 61989, 144641, 185967, 433923, 640553, 1301769, 1921659, 4483871, 5764977, 13451613, 40354839]

約数ペア:

[(1, 40354839), (3, 13451613), (7, 5764977), (9, 4483871), (21, 1921659), (31, 1301769), (63, 640553), (93, 433923), (217, 185967), (279, 144641), (651, 61989), (1953, 20663)]