78083240

素因数分解:

$2^3\times 5^1\times {\mathrm{109}}^1\times {\mathrm{17909}}^1$

素因数の和:18029

約数の個数: 32

約数和(自身を含む): 177309000

約数和(自身を除く): 99225760

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 109, 218, 436, 545, 872, 1090, 2180, 4360, 17909, 35818, 71636, 89545, 143272, 179090, 358180, 716360, 1952081, 3904162, 7808324, 9760405, 15616648, 19520810, 39041620, 78083240]

約数ペア:

[(1, 78083240), (2, 39041620), (4, 19520810), (5, 15616648), (8, 9760405), (10, 7808324), (20, 3904162), (40, 1952081), (109, 716360), (218, 358180), (436, 179090), (545, 143272), (872, 89545), (1090, 71636), (2180, 35818), (4360, 17909)]