261566380

素因数分解:

$2^2\times 5^1\times {\mathrm{239}}^1\times {\mathrm{54721}}^1$

素因数の和:54969

約数の個数: 24

約数和(自身を含む): 551597760

約数和(自身を除く): 290031380

約数列:

[1, 2, 4, 5, 10, 20, 239, 478, 956, 1195, 2390, 4780, 54721, 109442, 218884, 273605, 547210, 1094420, 13078319, 26156638, 52313276, 65391595, 130783190, 261566380]

約数ペア:

[(1, 261566380), (2, 130783190), (4, 65391595), (5, 52313276), (10, 26156638), (20, 13078319), (239, 1094420), (478, 547210), (956, 273605), (1195, 218884), (2390, 109442), (4780, 54721)]