28891221

素因数分解:

$3^1\times {\mathrm{29}}^1\times {\mathrm{83}}^1\times {\mathrm{4001}}^1$

素因数の和:4116

約数の個数: 16

約数和(自身を含む): 40340160

約数和(自身を除く): 11448939

約数列:

[1, 3, 29, 83, 87, 249, 2407, 4001, 7221, 12003, 116029, 332083, 348087, 996249, 9630407, 28891221]

約数ペア:

[(1, 28891221), (3, 9630407), (29, 996249), (83, 348087), (87, 332083), (249, 116029), (2407, 12003), (4001, 7221)]