278291255

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{271}}^1\times {\mathrm{18671}}^1$

素因数の和:18958

約数の個数: 16

約数和(自身を含む): 365672448

約数和(自身を除く): 87381193

約数列:

[1, 5, 11, 55, 271, 1355, 2981, 14905, 18671, 93355, 205381, 1026905, 5059841, 25299205, 55658251, 278291255]

約数ペア:

[(1, 278291255), (5, 55658251), (11, 25299205), (55, 5059841), (271, 1026905), (1355, 205381), (2981, 93355), (14905, 18671)]