261152816

素因数分解:

$2^4\times {\mathrm{389}}^1\times {\mathrm{41959}}^1$

素因数の和:42356

約数の個数: 20

約数和(自身を含む): 507296400

約数和(自身を除く): 246143584

約数列:

[1, 2, 4, 8, 16, 389, 778, 1556, 3112, 6224, 41959, 83918, 167836, 335672, 671344, 16322051, 32644102, 65288204, 130576408, 261152816]

約数ペア:

[(1, 261152816), (2, 130576408), (4, 65288204), (8, 32644102), (16, 16322051), (389, 671344), (778, 335672), (1556, 167836), (3112, 83918), (6224, 41959)]