21287788

素因数分解:

$2^2\times {\mathrm{23}}^1\times {\mathrm{71}}^1\times {\mathrm{3259}}^1$

素因数の和:3357

約数の個数: 24

約数和(自身を含む): 39432960

約数和(自身を除く): 18145172

約数列:

[1, 2, 4, 23, 46, 71, 92, 142, 284, 1633, 3259, 3266, 6518, 6532, 13036, 74957, 149914, 231389, 299828, 462778, 925556, 5321947, 10643894, 21287788]

約数ペア:

[(1, 21287788), (2, 10643894), (4, 5321947), (23, 925556), (46, 462778), (71, 299828), (92, 231389), (142, 149914), (284, 74957), (1633, 13036), (3259, 6532), (3266, 6518)]