21604845

素因数分解:

$3^1\times 5^1\times {\mathrm{349}}^1\times {\mathrm{4127}}^1$

素因数の和:4484

約数の個数: 16

約数和(自身を含む): 34675200

約数和(自身を除く): 13070355

約数列:

[1, 3, 5, 15, 349, 1047, 1745, 4127, 5235, 12381, 20635, 61905, 1440323, 4320969, 7201615, 21604845]

約数ペア:

[(1, 21604845), (3, 7201615), (5, 4320969), (15, 1440323), (349, 61905), (1047, 20635), (1745, 12381), (4127, 5235)]