28947860

素因数分解:

$2^2\times 5^1\times {\mathrm{643}}^1\times {\mathrm{2251}}^1$

素因数の和:2903

約数の個数: 24

約数和(自身を含む): 60912096

約数和(自身を除く): 31964236

約数列:

[1, 2, 4, 5, 10, 20, 643, 1286, 2251, 2572, 3215, 4502, 6430, 9004, 11255, 12860, 22510, 45020, 1447393, 2894786, 5789572, 7236965, 14473930, 28947860]

約数ペア:

[(1, 28947860), (2, 14473930), (4, 7236965), (5, 5789572), (10, 2894786), (20, 1447393), (643, 45020), (1286, 22510), (2251, 12860), (2572, 11255), (3215, 9004), (4502, 6430)]