28465880

素因数分解:

$2^3\times 5^1\times {\mathrm{547}}^1\times {\mathrm{1301}}^1$

素因数の和:1859

約数の個数: 32

約数和(自身を含む): 64214640

約数和(自身を除く): 35748760

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 547, 1094, 1301, 2188, 2602, 2735, 4376, 5204, 5470, 6505, 10408, 10940, 13010, 21880, 26020, 52040, 711647, 1423294, 2846588, 3558235, 5693176, 7116470, 14232940, 28465880]

約数ペア:

[(1, 28465880), (2, 14232940), (4, 7116470), (5, 5693176), (8, 3558235), (10, 2846588), (20, 1423294), (40, 711647), (547, 52040), (1094, 26020), (1301, 21880), (2188, 13010), (2602, 10940), (2735, 10408), (4376, 6505), (5204, 5470)]