21123654

素因数分解:

$2^1\times 3^1\times {\mathrm{449}}^1\times {\mathrm{7841}}^1$

素因数の和:8295

約数の個数: 16

約数和(自身を含む): 42346800

約数和(自身を除く): 21223146

約数列:

[1, 2, 3, 6, 449, 898, 1347, 2694, 7841, 15682, 23523, 47046, 3520609, 7041218, 10561827, 21123654]

約数ペア:

[(1, 21123654), (2, 10561827), (3, 7041218), (6, 3520609), (449, 47046), (898, 23523), (1347, 15682), (2694, 7841)]