2181123

素因数分解:

$3^2\times 7^1\times {\mathrm{89}}^1\times {\mathrm{389}}^1$

素因数の和:491

約数の個数: 24

約数和(自身を含む): 3650400

約数和(自身を除く): 1469277

約数列:

[1, 3, 7, 9, 21, 63, 89, 267, 389, 623, 801, 1167, 1869, 2723, 3501, 5607, 8169, 24507, 34621, 103863, 242347, 311589, 727041, 2181123]

約数ペア:

[(1, 2181123), (3, 727041), (7, 311589), (9, 242347), (21, 103863), (63, 34621), (89, 24507), (267, 8169), (389, 5607), (623, 3501), (801, 2723), (1167, 1869)]