21323690

素因数分解:

$2^1\times 5^1\times {\mathrm{41}}^1\times {\mathrm{52009}}^1$

素因数の和:52057

約数の個数: 16

約数和(自身を含む): 39319560

約数和(自身を除く): 17995870

約数列:

[1, 2, 5, 10, 41, 82, 205, 410, 52009, 104018, 260045, 520090, 2132369, 4264738, 10661845, 21323690]

約数ペア:

[(1, 21323690), (2, 10661845), (5, 4264738), (10, 2132369), (41, 520090), (82, 260045), (205, 104018), (410, 52009)]