80189140

素因数分解:

$2^2\times 5^1\times {\mathrm{257}}^1\times {\mathrm{15601}}^1$

素因数の和:15867

約数の個数: 24

約数和(自身を含む): 169063272

約数和(自身を除く): 88874132

約数列:

[1, 2, 4, 5, 10, 20, 257, 514, 1028, 1285, 2570, 5140, 15601, 31202, 62404, 78005, 156010, 312020, 4009457, 8018914, 16037828, 20047285, 40094570, 80189140]

約数ペア:

[(1, 80189140), (2, 40094570), (4, 20047285), (5, 16037828), (10, 8018914), (20, 4009457), (257, 312020), (514, 156010), (1028, 78005), (1285, 62404), (2570, 31202), (5140, 15601)]