256431615

素因数分解:

$3^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{643}}^1\times {\mathrm{2417}}^1$

素因数の和:3079

約数の個数: 32

約数和(自身を含む): 448471296

約数和(自身を除く): 192039681

約数列:

[1, 3, 5, 11, 15, 33, 55, 165, 643, 1929, 2417, 3215, 7073, 7251, 9645, 12085, 21219, 26587, 35365, 36255, 79761, 106095, 132935, 398805, 1554131, 4662393, 7770655, 17095441, 23311965, 51286323, 85477205, 256431615]

約数ペア:

[(1, 256431615), (3, 85477205), (5, 51286323), (11, 23311965), (15, 17095441), (33, 7770655), (55, 4662393), (165, 1554131), (643, 398805), (1929, 132935), (2417, 106095), (3215, 79761), (7073, 36255), (7251, 35365), (9645, 26587), (12085, 21219)]