21038403

素因数分解:

$3^1\times {\mathrm{53}}^1\times {\mathrm{307}}^1\times {\mathrm{431}}^1$

素因数の和:794

約数の個数: 16

約数和(自身を含む): 28740096

約数和(自身を除く): 7701693

約数列:

[1, 3, 53, 159, 307, 431, 921, 1293, 16271, 22843, 48813, 68529, 132317, 396951, 7012801, 21038403]

約数ペア:

[(1, 21038403), (3, 7012801), (53, 396951), (159, 132317), (307, 68529), (431, 48813), (921, 22843), (1293, 16271)]