21131487

素因数分解:

$3^2\times {\mathrm{13}}^1\times {\mathrm{179}}^1\times {\mathrm{1009}}^1$

素因数の和:1207

約数の個数: 24

約数和(自身を含む): 33087600

約数和(自身を除く): 11956113

約数列:

[1, 3, 9, 13, 39, 117, 179, 537, 1009, 1611, 2327, 3027, 6981, 9081, 13117, 20943, 39351, 118053, 180611, 541833, 1625499, 2347943, 7043829, 21131487]

約数ペア:

[(1, 21131487), (3, 7043829), (9, 2347943), (13, 1625499), (39, 541833), (117, 180611), (179, 118053), (537, 39351), (1009, 20943), (1611, 13117), (2327, 9081), (3027, 6981)]