28507281

素因数分解:

$3^1\times {\mathrm{11}}^1\times {\mathrm{23}}^3\times {\mathrm{71}}^1$

素因数の和:154

約数の個数: 32

約数和(自身を含む): 43960320

約数和(自身を除く): 15453039

約数列:

[1, 3, 11, 23, 33, 69, 71, 213, 253, 529, 759, 781, 1587, 1633, 2343, 4899, 5819, 12167, 17457, 17963, 36501, 37559, 53889, 112677, 133837, 401511, 413149, 863857, 1239447, 2591571, 9502427, 28507281]

約数ペア:

[(1, 28507281), (3, 9502427), (11, 2591571), (23, 1239447), (33, 863857), (69, 413149), (71, 401511), (213, 133837), (253, 112677), (529, 53889), (759, 37559), (781, 36501), (1587, 17963), (1633, 17457), (2343, 12167), (4899, 5819)]