21160556

素因数分解:

$2^2\times {\mathrm{71}}^1\times {\mathrm{74509}}^1$

素因数の和:74584

約数の個数: 12

約数和(自身を含む): 37553040

約数和(自身を除く): 16392484

約数列:

[1, 2, 4, 71, 142, 284, 74509, 149018, 298036, 5290139, 10580278, 21160556]

約数ペア:

[(1, 21160556), (2, 10580278), (4, 5290139), (71, 298036), (142, 149018), (284, 74509)]