21801105

素因数分解:

$3^2\times 5^1\times {\mathrm{269}}^1\times {\mathrm{1801}}^1$

素因数の和:2081

約数の個数: 24

約数和(自身を含む): 37950120

約数和(自身を除く): 16149015

約数列:

[1, 3, 5, 9, 15, 45, 269, 807, 1345, 1801, 2421, 4035, 5403, 9005, 12105, 16209, 27015, 81045, 484469, 1453407, 2422345, 4360221, 7267035, 21801105]

約数ペア:

[(1, 21801105), (3, 7267035), (5, 4360221), (9, 2422345), (15, 1453407), (45, 484469), (269, 81045), (807, 27015), (1345, 16209), (1801, 12105), (2421, 9005), (4035, 5403)]