278328981

素因数分解:

$3^1\times 7^1\times {\mathrm{17}}^1\times {\mathrm{43}}^1\times {\mathrm{18131}}^1$

素因数の和:18201

約数の個数: 32

約数和(自身を含む): 459537408

約数和(自身を除く): 181208427

約数列:

[1, 3, 7, 17, 21, 43, 51, 119, 129, 301, 357, 731, 903, 2193, 5117, 15351, 18131, 54393, 126917, 308227, 380751, 779633, 924681, 2157589, 2338899, 5457431, 6472767, 13253761, 16372293, 39761283, 92776327, 278328981]

約数ペア:

[(1, 278328981), (3, 92776327), (7, 39761283), (17, 16372293), (21, 13253761), (43, 6472767), (51, 5457431), (119, 2338899), (129, 2157589), (301, 924681), (357, 779633), (731, 380751), (903, 308227), (2193, 126917), (5117, 54393), (15351, 18131)]