81371780

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{581227}}^1$

素因数の和:581243

約数の個数: 24

約数和(自身を含む): 195292608

約数和(自身を除く): 113920828

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 581227, 1162454, 2324908, 2906135, 4068589, 5812270, 8137178, 11624540, 16274356, 20342945, 40685890, 81371780]

約数ペア:

[(1, 81371780), (2, 40685890), (4, 20342945), (5, 16274356), (7, 11624540), (10, 8137178), (14, 5812270), (20, 4068589), (28, 2906135), (35, 2324908), (70, 1162454), (140, 581227)]