1280498890

素因数分解:

$2^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{11640899}}^1$

素因数の和:11640917

約数の個数: 16

約数和(自身を含む): 2514434400

約数和(自身を除く): 1233935510

約数列:

[1, 2, 5, 10, 11, 22, 55, 110, 11640899, 23281798, 58204495, 116408990, 128049889, 256099778, 640249445, 1280498890]

約数ペア:

[(1, 1280498890), (2, 640249445), (5, 256099778), (10, 128049889), (11, 116408990), (22, 58204495), (55, 23281798), (110, 11640899)]