28133679

素因数分解:

$3^1\times 7^1\times {\mathrm{71}}^1\times {\mathrm{18869}}^1$

素因数の和:18950

約数の個数: 16

約数和(自身を含む): 43476480

約数和(自身を除く): 15342801

約数列:

[1, 3, 7, 21, 71, 213, 497, 1491, 18869, 56607, 132083, 396249, 1339699, 4019097, 9377893, 28133679]

約数ペア:

[(1, 28133679), (3, 9377893), (7, 4019097), (21, 1339699), (71, 396249), (213, 132083), (497, 56607), (1491, 18869)]