21321765

素因数分解:

$3^3\times 5^1\times {\mathrm{43}}^1\times {\mathrm{3673}}^1$

素因数の和:3730

約数の個数: 32

約数和(自身を含む): 38797440

約数和(自身を除く): 17475675

約数列:

[1, 3, 5, 9, 15, 27, 43, 45, 129, 135, 215, 387, 645, 1161, 1935, 3673, 5805, 11019, 18365, 33057, 55095, 99171, 157939, 165285, 473817, 495855, 789695, 1421451, 2369085, 4264353, 7107255, 21321765]

約数ペア:

[(1, 21321765), (3, 7107255), (5, 4264353), (9, 2369085), (15, 1421451), (27, 789695), (43, 495855), (45, 473817), (129, 165285), (135, 157939), (215, 99171), (387, 55095), (645, 33057), (1161, 18365), (1935, 11019), (3673, 5805)]