21000279729

素因数分解:

$3^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{53}}^1\times {\mathrm{923617}}^1$

素因数の和:923697

約数の個数: 32

約数和(自身を含む): 33516249984

約数和(自身を除く): 12515970255

約数列:

[1, 3, 11, 13, 33, 39, 53, 143, 159, 429, 583, 689, 1749, 2067, 7579, 22737, 923617, 2770851, 10159787, 12007021, 30479361, 36021063, 48951701, 132077231, 146855103, 396231693, 538468711, 636372113, 1615406133, 1909116339, 7000093243, 21000279729]

約数ペア:

[(1, 21000279729), (3, 7000093243), (11, 1909116339), (13, 1615406133), (33, 636372113), (39, 538468711), (53, 396231693), (143, 146855103), (159, 132077231), (429, 48951701), (583, 36021063), (689, 30479361), (1749, 12007021), (2067, 10159787), (7579, 2770851), (22737, 923617)]