21675980

素因数分解:

$2^2\times 5^1\times {\mathrm{433}}^1\times {\mathrm{2503}}^1$

素因数の和:2945

約数の個数: 24

約数和(自身を含む): 45642912

約数和(自身を除く): 23966932

約数列:

[1, 2, 4, 5, 10, 20, 433, 866, 1732, 2165, 2503, 4330, 5006, 8660, 10012, 12515, 25030, 50060, 1083799, 2167598, 4335196, 5418995, 10837990, 21675980]

約数ペア:

[(1, 21675980), (2, 10837990), (4, 5418995), (5, 4335196), (10, 2167598), (20, 1083799), (433, 50060), (866, 25030), (1732, 12515), (2165, 10012), (2503, 8660), (4330, 5006)]