1285687540

素因数分解:

$2^2\times 5^1\times {\mathrm{1609}}^1\times {\mathrm{39953}}^1$

素因数の和:41571

約数の個数: 24

約数和(自身を含む): 2701689480

約数和(自身を除く): 1416001940

約数列:

[1, 2, 4, 5, 10, 20, 1609, 3218, 6436, 8045, 16090, 32180, 39953, 79906, 159812, 199765, 399530, 799060, 64284377, 128568754, 257137508, 321421885, 642843770, 1285687540]

約数ペア:

[(1, 1285687540), (2, 642843770), (4, 321421885), (5, 257137508), (10, 128568754), (20, 64284377), (1609, 799060), (3218, 399530), (6436, 199765), (8045, 159812), (16090, 79906), (32180, 39953)]