28911818

素因数分解:

$2^1\times {\mathrm{13}}^1\times {\mathrm{53}}^1\times {\mathrm{20981}}^1$

素因数の和:21049

約数の個数: 16

約数和(自身を含む): 47587176

約数和(自身を除く): 18675358

約数列:

[1, 2, 13, 26, 53, 106, 689, 1378, 20981, 41962, 272753, 545506, 1111993, 2223986, 14455909, 28911818]

約数ペア:

[(1, 28911818), (2, 14455909), (13, 2223986), (26, 1111993), (53, 545506), (106, 272753), (689, 41962), (1378, 20981)]