21688732

素因数分解:

$2^2\times {\mathrm{13}}^1\times {\mathrm{631}}^1\times {\mathrm{661}}^1$

素因数の和:1309

約数の個数: 24

約数和(自身を含む): 41001632

約数和(自身を除く): 19312900

約数列:

[1, 2, 4, 13, 26, 52, 631, 661, 1262, 1322, 2524, 2644, 8203, 8593, 16406, 17186, 32812, 34372, 417091, 834182, 1668364, 5422183, 10844366, 21688732]

約数ペア:

[(1, 21688732), (2, 10844366), (4, 5422183), (13, 1668364), (26, 834182), (52, 417091), (631, 34372), (661, 32812), (1262, 17186), (1322, 16406), (2524, 8593), (2644, 8203)]