28275855

素因数分解:

$3^1\times 5^1\times {\mathrm{23}}^1\times {\mathrm{41}}^1\times {\mathrm{1999}}^1$

素因数の和:2071

約数の個数: 32

約数和(自身を含む): 48384000

約数和(自身を除く): 20108145

約数列:

[1, 3, 5, 15, 23, 41, 69, 115, 123, 205, 345, 615, 943, 1999, 2829, 4715, 5997, 9995, 14145, 29985, 45977, 81959, 137931, 229885, 245877, 409795, 689655, 1229385, 1885057, 5655171, 9425285, 28275855]

約数ペア:

[(1, 28275855), (3, 9425285), (5, 5655171), (15, 1885057), (23, 1229385), (41, 689655), (69, 409795), (115, 245877), (123, 229885), (205, 137931), (345, 81959), (615, 45977), (943, 29985), (1999, 14145), (2829, 9995), (4715, 5997)]