21205098215

素因数分解:

$5^1\times 7^1\times {\mathrm{439}}^1\times {\mathrm{541}}^1\times {\mathrm{2551}}^1$

素因数の和:3543

約数の個数: 32

約数和(自身を含む): 29212846080

約数和(自身を除く): 8007747865

約数列:

[1, 5, 7, 35, 439, 541, 2195, 2551, 2705, 3073, 3787, 12755, 15365, 17857, 18935, 89285, 237499, 1119889, 1187495, 1380091, 1662493, 5599445, 6900455, 7839223, 8312465, 9660637, 39196115, 48303185, 605859949, 3029299745, 4241019643, 21205098215]

約数ペア:

[(1, 21205098215), (5, 4241019643), (7, 3029299745), (35, 605859949), (439, 48303185), (541, 39196115), (2195, 9660637), (2551, 8312465), (2705, 7839223), (3073, 6900455), (3787, 5599445), (12755, 1662493), (15365, 1380091), (17857, 1187495), (18935, 1119889), (89285, 237499)]