80919760

素因数分解:

$2^4\times 5^1\times {\mathrm{653}}^1\times {\mathrm{1549}}^1$

素因数の和:2215

約数の個数: 40

約数和(自身を含む): 188548200

約数和(自身を除く): 107628440

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 653, 1306, 1549, 2612, 3098, 3265, 5224, 6196, 6530, 7745, 10448, 12392, 13060, 15490, 24784, 26120, 30980, 52240, 61960, 123920, 1011497, 2022994, 4045988, 5057485, 8091976, 10114970, 16183952, 20229940, 40459880, 80919760]

約数ペア:

[(1, 80919760), (2, 40459880), (4, 20229940), (5, 16183952), (8, 10114970), (10, 8091976), (16, 5057485), (20, 4045988), (40, 2022994), (80, 1011497), (653, 123920), (1306, 61960), (1549, 52240), (2612, 30980), (3098, 26120), (3265, 24784), (5224, 15490), (6196, 13060), (6530, 12392), (7745, 10448)]