291220209

素因数分解:

$3^2\times 7^1\times {\mathrm{43}}^1\times {\mathrm{193}}^1\times {\mathrm{557}}^1$

素因数の和:806

約数の個数: 48

約数和(自身を含む): 495361152

約数和(自身を除く): 204140943

約数列:

[1, 3, 7, 9, 21, 43, 63, 129, 193, 301, 387, 557, 579, 903, 1351, 1671, 1737, 2709, 3899, 4053, 5013, 8299, 11697, 12159, 23951, 24897, 35091, 58093, 71853, 74691, 107501, 167657, 174279, 215559, 322503, 502971, 522837, 752507, 967509, 1508913, 2257521, 4622543, 6772563, 13867629, 32357801, 41602887, 97073403, 291220209]

約数ペア:

[(1, 291220209), (3, 97073403), (7, 41602887), (9, 32357801), (21, 13867629), (43, 6772563), (63, 4622543), (129, 2257521), (193, 1508913), (301, 967509), (387, 752507), (557, 522837), (579, 502971), (903, 322503), (1351, 215559), (1671, 174279), (1737, 167657), (2709, 107501), (3899, 74691), (4053, 71853), (5013, 58093), (8299, 35091), (11697, 24897), (12159, 23951)]