81702880

素因数分解:

$2^5\times 5^1\times 7^1\times {\mathrm{72949}}^1$

素因数の和:72971

約数の個数: 48

約数和(自身を含む): 220600800

約数和(自身を除く): 138897920

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 32, 35, 40, 56, 70, 80, 112, 140, 160, 224, 280, 560, 1120, 72949, 145898, 291796, 364745, 510643, 583592, 729490, 1021286, 1167184, 1458980, 2042572, 2334368, 2553215, 2917960, 4085144, 5106430, 5835920, 8170288, 10212860, 11671840, 16340576, 20425720, 40851440, 81702880]

約数ペア:

[(1, 81702880), (2, 40851440), (4, 20425720), (5, 16340576), (7, 11671840), (8, 10212860), (10, 8170288), (14, 5835920), (16, 5106430), (20, 4085144), (28, 2917960), (32, 2553215), (35, 2334368), (40, 2042572), (56, 1458980), (70, 1167184), (80, 1021286), (112, 729490), (140, 583592), (160, 510643), (224, 364745), (280, 291796), (560, 145898), (1120, 72949)]