21908990

素因数分解:

$2^1\times 5^1\times {\mathrm{233}}^1\times {\mathrm{9403}}^1$

素因数の和:9643

約数の個数: 16

約数和(自身を含む): 39609648

約数和(自身を除く): 17700658

約数列:

[1, 2, 5, 10, 233, 466, 1165, 2330, 9403, 18806, 47015, 94030, 2190899, 4381798, 10954495, 21908990]

約数ペア:

[(1, 21908990), (2, 10954495), (5, 4381798), (10, 2190899), (233, 94030), (466, 47015), (1165, 18806), (2330, 9403)]