21009868

素因数分解:

$2^2\times {\mathrm{11}}^1\times {\mathrm{477497}}^1$

素因数の和:477512

約数の個数: 12

約数和(自身を含む): 40109832

約数和(自身を除く): 19099964

約数列:

[1, 2, 4, 11, 22, 44, 477497, 954994, 1909988, 5252467, 10504934, 21009868]

約数ペア:

[(1, 21009868), (2, 10504934), (4, 5252467), (11, 1909988), (22, 954994), (44, 477497)]