681796208

素因数分解:

$2^4\times {\mathrm{2473}}^1\times {\mathrm{17231}}^1$

素因数の和:19712

約数の個数: 20

約数和(自身を含む): 1321591008

約数和(自身を除く): 639794800

約数列:

[1, 2, 4, 8, 16, 2473, 4946, 9892, 17231, 19784, 34462, 39568, 68924, 137848, 275696, 42612263, 85224526, 170449052, 340898104, 681796208]

約数ペア:

[(1, 681796208), (2, 340898104), (4, 170449052), (8, 85224526), (16, 42612263), (2473, 275696), (4946, 137848), (9892, 68924), (17231, 39568), (19784, 34462)]