19710381

素因数分解:

$3^1\times {\mathrm{37}}^1\times {\mathrm{41}}^1\times {\mathrm{61}}^1\times {\mathrm{71}}^1$

素因数の和:213

約数の個数: 32

約数和(自身を含む): 28498176

約数和(自身を除く): 8787795

約数列:

[1, 3, 37, 41, 61, 71, 111, 123, 183, 213, 1517, 2257, 2501, 2627, 2911, 4331, 4551, 6771, 7503, 7881, 8733, 12993, 92537, 107707, 160247, 177571, 277611, 323121, 480741, 532713, 6570127, 19710381]

約数ペア:

[(1, 19710381), (3, 6570127), (37, 532713), (41, 480741), (61, 323121), (71, 277611), (111, 177571), (123, 160247), (183, 107707), (213, 92537), (1517, 12993), (2257, 8733), (2501, 7881), (2627, 7503), (2911, 6771), (4331, 4551)]