28004361

素因数分解:

$3^1\times 7^1\times {\mathrm{11}}^2\times {\mathrm{103}}^1\times {\mathrm{107}}^1$

素因数の和:242

約数の個数: 48

約数和(自身を含む): 47803392

約数和(自身を除く): 19799031

約数列:

[1, 3, 7, 11, 21, 33, 77, 103, 107, 121, 231, 309, 321, 363, 721, 749, 847, 1133, 1177, 2163, 2247, 2541, 3399, 3531, 7931, 8239, 11021, 12463, 12947, 23793, 24717, 33063, 37389, 38841, 77147, 87241, 90629, 121231, 231441, 261723, 271887, 363693, 848617, 1333541, 2545851, 4000623, 9334787, 28004361]

約数ペア:

[(1, 28004361), (3, 9334787), (7, 4000623), (11, 2545851), (21, 1333541), (33, 848617), (77, 363693), (103, 271887), (107, 261723), (121, 231441), (231, 121231), (309, 90629), (321, 87241), (363, 77147), (721, 38841), (749, 37389), (847, 33063), (1133, 24717), (1177, 23793), (2163, 12947), (2247, 12463), (2541, 11021), (3399, 8239), (3531, 7931)]