28203320

素因数分解:

$2^3\times 5^1\times {\mathrm{547}}^1\times {\mathrm{1289}}^1$

素因数の和:1847

約数の個数: 32

約数和(自身を含む): 63622800

約数和(自身を除く): 35419480

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 547, 1094, 1289, 2188, 2578, 2735, 4376, 5156, 5470, 6445, 10312, 10940, 12890, 21880, 25780, 51560, 705083, 1410166, 2820332, 3525415, 5640664, 7050830, 14101660, 28203320]

約数ペア:

[(1, 28203320), (2, 14101660), (4, 7050830), (5, 5640664), (8, 3525415), (10, 2820332), (20, 1410166), (40, 705083), (547, 51560), (1094, 25780), (1289, 21880), (2188, 12890), (2578, 10940), (2735, 10312), (4376, 6445), (5156, 5470)]