21054813

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{37}}^1\times {\mathrm{14591}}^1$

素因数の和:14644

約数の個数: 16

約数和(自身を含む): 31051776

約数和(自身を除く): 9996963

約数列:

[1, 3, 13, 37, 39, 111, 481, 1443, 14591, 43773, 189683, 539867, 569049, 1619601, 7018271, 21054813]

約数ペア:

[(1, 21054813), (3, 7018271), (13, 1619601), (37, 569049), (39, 539867), (111, 189683), (481, 43773), (1443, 14591)]