18885789

素因数分解:

$3^2\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{41}}^1\times {\mathrm{127}}^1$

素因数の和:218

約数の個数: 48

約数和(自身を含む): 31309824

約数和(自身を除く): 12424035

約数列:

[1, 3, 9, 13, 31, 39, 41, 93, 117, 123, 127, 279, 369, 381, 403, 533, 1143, 1209, 1271, 1599, 1651, 3627, 3813, 3937, 4797, 4953, 5207, 11439, 11811, 14859, 15621, 16523, 35433, 46863, 49569, 51181, 67691, 148707, 153543, 161417, 203073, 460629, 484251, 609219, 1452753, 2098421, 6295263, 18885789]

約数ペア:

[(1, 18885789), (3, 6295263), (9, 2098421), (13, 1452753), (31, 609219), (39, 484251), (41, 460629), (93, 203073), (117, 161417), (123, 153543), (127, 148707), (279, 67691), (369, 51181), (381, 49569), (403, 46863), (533, 35433), (1143, 16523), (1209, 15621), (1271, 14859), (1599, 11811), (1651, 11439), (3627, 5207), (3813, 4953), (3937, 4797)]