261244564

素因数分解:

$2^2\times 7^1\times {\mathrm{31}}^1\times {\mathrm{300973}}^1$

素因数の和:301015

約数の個数: 24

約数和(自身を含む): 539345408

約数和(自身を除く): 278100844

約数列:

[1, 2, 4, 7, 14, 28, 31, 62, 124, 217, 434, 868, 300973, 601946, 1203892, 2106811, 4213622, 8427244, 9330163, 18660326, 37320652, 65311141, 130622282, 261244564]

約数ペア:

[(1, 261244564), (2, 130622282), (4, 65311141), (7, 37320652), (14, 18660326), (28, 9330163), (31, 8427244), (62, 4213622), (124, 2106811), (217, 1203892), (434, 601946), (868, 300973)]