28821039

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{37}}^1\times {\mathrm{19973}}^1$

素因数の和:20026

約数の個数: 16

約数和(自身を含む): 42504672

約数和(自身を除く): 13683633

約数列:

[1, 3, 13, 37, 39, 111, 481, 1443, 19973, 59919, 259649, 739001, 778947, 2217003, 9607013, 28821039]

約数ペア:

[(1, 28821039), (3, 9607013), (13, 2217003), (37, 778947), (39, 739001), (111, 259649), (481, 59919), (1443, 19973)]