21708297

素因数分解:

$3^3\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{2689}}^1$

素因数の和:2734

約数の個数: 32

約数和(自身を含む): 36153600

約数和(自身を除く): 14445303

約数列:

[1, 3, 9, 13, 23, 27, 39, 69, 117, 207, 299, 351, 621, 897, 2689, 2691, 8067, 8073, 24201, 34957, 61847, 72603, 104871, 185541, 314613, 556623, 804011, 943839, 1669869, 2412033, 7236099, 21708297]

約数ペア:

[(1, 21708297), (3, 7236099), (9, 2412033), (13, 1669869), (23, 943839), (27, 804011), (39, 556623), (69, 314613), (117, 185541), (207, 104871), (299, 72603), (351, 61847), (621, 34957), (897, 24201), (2689, 8073), (2691, 8067)]