131221264

素因数分解:

$2^4\times {\mathrm{31}}^1\times {\mathrm{264559}}^1$

素因数の和:264598

約数の個数: 20

約数和(自身を含む): 262443520

約数和(自身を除く): 131222256

約数列:

[1, 2, 4, 8, 16, 31, 62, 124, 248, 496, 264559, 529118, 1058236, 2116472, 4232944, 8201329, 16402658, 32805316, 65610632, 131221264]

約数ペア:

[(1, 131221264), (2, 65610632), (4, 32805316), (8, 16402658), (16, 8201329), (31, 4232944), (62, 2116472), (124, 1058236), (248, 529118), (496, 264559)]