18318209

素因数分解:

$7^2\times {\mathrm{13}}^1\times {\mathrm{149}}^1\times {\mathrm{193}}^1$

素因数の和:369

約数の個数: 24

約数和(自身を含む): 23221800

約数和(自身を除く): 4903591

約数列:

[1, 7, 13, 49, 91, 149, 193, 637, 1043, 1351, 1937, 2509, 7301, 9457, 13559, 17563, 28757, 94913, 122941, 201299, 373841, 1409093, 2616887, 18318209]

約数ペア:

[(1, 18318209), (7, 2616887), (13, 1409093), (49, 373841), (91, 201299), (149, 122941), (193, 94913), (637, 28757), (1043, 17563), (1351, 13559), (1937, 9457), (2509, 7301)]