28919228

素因数分解:

$2^2\times {\mathrm{13}}^1\times {\mathrm{139}}^1\times {\mathrm{4001}}^1$

素因数の和:4157

約数の個数: 24

約数和(自身を含む): 54907440

約数和(自身を除く): 25988212

約数列:

[1, 2, 4, 13, 26, 52, 139, 278, 556, 1807, 3614, 4001, 7228, 8002, 16004, 52013, 104026, 208052, 556139, 1112278, 2224556, 7229807, 14459614, 28919228]

約数ペア:

[(1, 28919228), (2, 14459614), (4, 7229807), (13, 2224556), (26, 1112278), (52, 556139), (139, 208052), (278, 104026), (556, 52013), (1807, 16004), (3614, 8002), (4001, 7228)]