21306065

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{103}}^1\times {\mathrm{3761}}^1$

素因数の和:3880

約数の個数: 16

約数和(自身を含む): 28169856

約数和(自身を除く): 6863791

約数列:

[1, 5, 11, 55, 103, 515, 1133, 3761, 5665, 18805, 41371, 206855, 387383, 1936915, 4261213, 21306065]

約数ペア:

[(1, 21306065), (5, 4261213), (11, 1936915), (55, 387383), (103, 206855), (515, 41371), (1133, 18805), (3761, 5665)]