21026320707

素因数分解:

$3^1\times 7^1\times {\mathrm{151}}^1\times {\mathrm{6630817}}^1$

素因数の和:6630978

約数の個数: 16

約数和(自身を含む): 32252298752

約数和(自身を除く): 11225978045

約数列:

[1, 3, 7, 21, 151, 453, 1057, 3171, 6630817, 19892451, 46415719, 139247157, 1001253367, 3003760101, 7008773569, 21026320707]

約数ペア:

[(1, 21026320707), (3, 7008773569), (7, 3003760101), (21, 1001253367), (151, 139247157), (453, 46415719), (1057, 19892451), (3171, 6630817)]