21978890

素因数分解:

$2^1\times 5^1\times {\mathrm{233}}^1\times {\mathrm{9433}}^1$

素因数の和:9673

約数の個数: 16

約数和(自身を含む): 39736008

約数和(自身を除く): 17757118

約数列:

[1, 2, 5, 10, 233, 466, 1165, 2330, 9433, 18866, 47165, 94330, 2197889, 4395778, 10989445, 21978890]

約数ペア:

[(1, 21978890), (2, 10989445), (5, 4395778), (10, 2197889), (233, 94330), (466, 47165), (1165, 18866), (2330, 9433)]