28411780

素因数分解:

$2^2\times 5^1\times {\mathrm{269}}^1\times {\mathrm{5281}}^1$

素因数の和:5559

約数の個数: 24

約数和(自身を含む): 59897880

約数和(自身を除く): 31486100

約数列:

[1, 2, 4, 5, 10, 20, 269, 538, 1076, 1345, 2690, 5281, 5380, 10562, 21124, 26405, 52810, 105620, 1420589, 2841178, 5682356, 7102945, 14205890, 28411780]

約数ペア:

[(1, 28411780), (2, 14205890), (4, 7102945), (5, 5682356), (10, 2841178), (20, 1420589), (269, 105620), (538, 52810), (1076, 26405), (1345, 21124), (2690, 10562), (5281, 5380)]