28137868

素因数分解:

$2^2\times {\mathrm{11}}^1\times {\mathrm{71}}^1\times {\mathrm{9007}}^1$

素因数の和:9093

約数の個数: 24

約数和(自身を含む): 54480384

約数和(自身を除く): 26342516

約数列:

[1, 2, 4, 11, 22, 44, 71, 142, 284, 781, 1562, 3124, 9007, 18014, 36028, 99077, 198154, 396308, 639497, 1278994, 2557988, 7034467, 14068934, 28137868]

約数ペア:

[(1, 28137868), (2, 14068934), (4, 7034467), (11, 2557988), (22, 1278994), (44, 639497), (71, 396308), (142, 198154), (284, 99077), (781, 36028), (1562, 18014), (3124, 9007)]