28679540

素因数分解:

$2^2\times 5^1\times {\mathrm{991}}^1\times {\mathrm{1447}}^1$

素因数の和:2447

約数の個数: 24

約数和(自身を含む): 60329472

約数和(自身を除く): 31649932

約数列:

[1, 2, 4, 5, 10, 20, 991, 1447, 1982, 2894, 3964, 4955, 5788, 7235, 9910, 14470, 19820, 28940, 1433977, 2867954, 5735908, 7169885, 14339770, 28679540]

約数ペア:

[(1, 28679540), (2, 14339770), (4, 7169885), (5, 5735908), (10, 2867954), (20, 1433977), (991, 28940), (1447, 19820), (1982, 14470), (2894, 9910), (3964, 7235), (4955, 5788)]