21053065

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{503}}^1\times {\mathrm{761}}^1$

素因数の和:1280

約数の個数: 16

約数和(自身を含む): 27651456

約数和(自身を除く): 6598391

約数列:

[1, 5, 11, 55, 503, 761, 2515, 3805, 5533, 8371, 27665, 41855, 382783, 1913915, 4210613, 21053065]

約数ペア:

[(1, 21053065), (5, 4210613), (11, 1913915), (55, 382783), (503, 41855), (761, 27665), (2515, 8371), (3805, 5533)]