287708679

素因数分解:

$3^4\times {\mathrm{23}}^1\times {\mathrm{389}}^1\times {\mathrm{397}}^1$

素因数の和:821

約数の個数: 40

約数和(自身を含む): 450758880

約数和(自身を除く): 163050201

約数列:

[1, 3, 9, 23, 27, 69, 81, 207, 389, 397, 621, 1167, 1191, 1863, 3501, 3573, 8947, 9131, 10503, 10719, 26841, 27393, 31509, 32157, 80523, 82179, 154433, 241569, 246537, 463299, 724707, 739611, 1389897, 3551959, 4169691, 10655877, 12509073, 31967631, 95902893, 287708679]

約数ペア:

[(1, 287708679), (3, 95902893), (9, 31967631), (23, 12509073), (27, 10655877), (69, 4169691), (81, 3551959), (207, 1389897), (389, 739611), (397, 724707), (621, 463299), (1167, 246537), (1191, 241569), (1863, 154433), (3501, 82179), (3573, 80523), (8947, 32157), (9131, 31509), (10503, 27393), (10719, 26841)]