28363881

素因数分解:

$3^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{107}}^1\times {\mathrm{971}}^1$

素因数の和:1101

約数の個数: 32

約数和(自身を含む): 47029248

約数和(自身を除く): 18665367

約数列:

[1, 3, 7, 13, 21, 39, 91, 107, 273, 321, 749, 971, 1391, 2247, 2913, 4173, 6797, 9737, 12623, 20391, 29211, 37869, 88361, 103897, 265083, 311691, 727279, 1350661, 2181837, 4051983, 9454627, 28363881]

約数ペア:

[(1, 28363881), (3, 9454627), (7, 4051983), (13, 2181837), (21, 1350661), (39, 727279), (91, 311691), (107, 265083), (273, 103897), (321, 88361), (749, 37869), (971, 29211), (1391, 20391), (2247, 12623), (2913, 9737), (4173, 6797)]