261522387

素因数分解:

$3^2\times 7^1\times {\mathrm{227}}^1\times {\mathrm{18287}}^1$

素因数の和:18527

約数の個数: 24

約数和(自身を含む): 433645056

約数和(自身を除く): 172122669

約数列:

[1, 3, 7, 9, 21, 63, 227, 681, 1589, 2043, 4767, 14301, 18287, 54861, 128009, 164583, 384027, 1152081, 4151149, 12453447, 29058043, 37360341, 87174129, 261522387]

約数ペア:

[(1, 261522387), (3, 87174129), (7, 37360341), (9, 29058043), (21, 12453447), (63, 4151149), (227, 1152081), (681, 384027), (1589, 164583), (2043, 128009), (4767, 54861), (14301, 18287)]