81284980

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{580607}}^1$

素因数の和:580623

約数の個数: 24

約数和(自身を含む): 195084288

約数和(自身を除く): 113799308

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 580607, 1161214, 2322428, 2903035, 4064249, 5806070, 8128498, 11612140, 16256996, 20321245, 40642490, 81284980]

約数ペア:

[(1, 81284980), (2, 40642490), (4, 20321245), (5, 16256996), (7, 11612140), (10, 8128498), (14, 5806070), (20, 4064249), (28, 2903035), (35, 2322428), (70, 1161214), (140, 580607)]