21049735

素因数分解:

$5^1\times 7^1\times {\mathrm{131}}^1\times {\mathrm{4591}}^1$

素因数の和:4734

約数の個数: 16

約数和(自身を含む): 29094912

約数和(自身を除く): 8045177

約数列:

[1, 5, 7, 35, 131, 655, 917, 4585, 4591, 22955, 32137, 160685, 601421, 3007105, 4209947, 21049735]

約数ペア:

[(1, 21049735), (5, 4209947), (7, 3007105), (35, 601421), (131, 160685), (655, 32137), (917, 22955), (4585, 4591)]