81321940

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{580871}}^1$

素因数の和:580887

約数の個数: 24

約数和(自身を含む): 195172992

約数和(自身を除く): 113851052

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 580871, 1161742, 2323484, 2904355, 4066097, 5808710, 8132194, 11617420, 16264388, 20330485, 40660970, 81321940]

約数ペア:

[(1, 81321940), (2, 40660970), (4, 20330485), (5, 16264388), (7, 11617420), (10, 8132194), (14, 5808710), (20, 4066097), (28, 2904355), (35, 2323484), (70, 1161742), (140, 580871)]