21373551

素因数分解:

$3^7\times {\mathrm{29}}^1\times {\mathrm{337}}^1$

素因数の和:387

約数の個数: 32

約数和(自身を含む): 33259200

約数和(自身を除く): 11885649

約数列:

[1, 3, 9, 27, 29, 81, 87, 243, 261, 337, 729, 783, 1011, 2187, 2349, 3033, 7047, 9099, 9773, 21141, 27297, 29319, 63423, 81891, 87957, 245673, 263871, 737019, 791613, 2374839, 7124517, 21373551]

約数ペア:

[(1, 21373551), (3, 7124517), (9, 2374839), (27, 791613), (29, 737019), (81, 263871), (87, 245673), (243, 87957), (261, 81891), (337, 63423), (729, 29319), (783, 27297), (1011, 21141), (2187, 9773), (2349, 9099), (3033, 7047)]