40487780

素因数分解:

$2^2\times 5^1\times {\mathrm{257}}^1\times {\mathrm{7877}}^1$

素因数の和:8143

約数の個数: 24

約数和(自身を含む): 85366008

約数和(自身を除く): 44878228

約数列:

[1, 2, 4, 5, 10, 20, 257, 514, 1028, 1285, 2570, 5140, 7877, 15754, 31508, 39385, 78770, 157540, 2024389, 4048778, 8097556, 10121945, 20243890, 40487780]

約数ペア:

[(1, 40487780), (2, 20243890), (4, 10121945), (5, 8097556), (10, 4048778), (20, 2024389), (257, 157540), (514, 78770), (1028, 39385), (1285, 31508), (2570, 15754), (5140, 7877)]