21729590

素因数分解:

$2^1\times 5^1\times {\mathrm{41}}^1\times {\mathrm{52999}}^1$

素因数の和:53047

約数の個数: 16

約数和(自身を含む): 40068000

約数和(自身を除く): 18338410

約数列:

[1, 2, 5, 10, 41, 82, 205, 410, 52999, 105998, 264995, 529990, 2172959, 4345918, 10864795, 21729590]

約数ペア:

[(1, 21729590), (2, 10864795), (5, 4345918), (10, 2172959), (41, 529990), (82, 264995), (205, 105998), (410, 52999)]