21000340828

素因数分解:

$2^2\times {\mathrm{389}}^1\times {\mathrm{13496363}}^1$

素因数の和:13496756

約数の個数: 12

約数和(自身を含む): 36845073720

約数和(自身を除く): 15844732892

約数列:

[1, 2, 4, 389, 778, 1556, 13496363, 26992726, 53985452, 5250085207, 10500170414, 21000340828]

約数ペア:

[(1, 21000340828), (2, 10500170414), (4, 5250085207), (389, 53985452), (778, 26992726), (1556, 13496363)]