31208121

素因数分解:

$3^2\times 7^1\times {\mathrm{71}}^1\times {\mathrm{6977}}^1$

素因数の和:7061

約数の個数: 24

約数和(自身を含む): 52251264

約数和(自身を除く): 21043143

約数列:

[1, 3, 7, 9, 21, 63, 71, 213, 497, 639, 1491, 4473, 6977, 20931, 48839, 62793, 146517, 439551, 495367, 1486101, 3467569, 4458303, 10402707, 31208121]

約数ペア:

[(1, 31208121), (3, 10402707), (7, 4458303), (9, 3467569), (21, 1486101), (63, 495367), (71, 439551), (213, 146517), (497, 62793), (639, 48839), (1491, 20931), (4473, 6977)]