291237128

素因数分解:

$2^3\times 7^1\times {\mathrm{13}}^1\times {\mathrm{400051}}^1$

素因数の和:400077

約数の個数: 32

約数和(自身を含む): 672087360

約数和(自身を除く): 380850232

約数列:

[1, 2, 4, 7, 8, 13, 14, 26, 28, 52, 56, 91, 104, 182, 364, 728, 400051, 800102, 1600204, 2800357, 3200408, 5200663, 5600714, 10401326, 11201428, 20802652, 22402856, 36404641, 41605304, 72809282, 145618564, 291237128]

約数ペア:

[(1, 291237128), (2, 145618564), (4, 72809282), (7, 41605304), (8, 36404641), (13, 22402856), (14, 20802652), (26, 11201428), (28, 10401326), (52, 5600714), (56, 5200663), (91, 3200408), (104, 2800357), (182, 1600204), (364, 800102), (728, 400051)]