1261255280

素因数分解:

$2^4\times 5^1\times {\mathrm{15765691}}^1$

素因数の和:15765704

約数の個数: 20

約数和(自身を含む): 2932418712

約数和(自身を除く): 1671163432

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 15765691, 31531382, 63062764, 78828455, 126125528, 157656910, 252251056, 315313820, 630627640, 1261255280]

約数ペア:

[(1, 1261255280), (2, 630627640), (4, 315313820), (5, 252251056), (8, 157656910), (10, 126125528), (16, 78828455), (20, 63062764), (40, 31531382), (80, 15765691)]