20826801

素因数分解:

$3^7\times {\mathrm{89}}^1\times {\mathrm{107}}^1$

素因数の和:217

約数の個数: 32

約数和(自身を含む): 31881600

約数和(自身を除く): 11054799

約数列:

[1, 3, 9, 27, 81, 89, 107, 243, 267, 321, 729, 801, 963, 2187, 2403, 2889, 7209, 8667, 9523, 21627, 26001, 28569, 64881, 78003, 85707, 194643, 234009, 257121, 771363, 2314089, 6942267, 20826801]

約数ペア:

[(1, 20826801), (3, 6942267), (9, 2314089), (27, 771363), (81, 257121), (89, 234009), (107, 194643), (243, 85707), (267, 78003), (321, 64881), (729, 28569), (801, 26001), (963, 21627), (2187, 9523), (2403, 8667), (2889, 7209)]