21480417

素因数分解:

$3^3\times 7^1\times {\mathrm{89}}^1\times {\mathrm{1277}}^1$

素因数の和:1382

約数の個数: 32

約数和(自身を含む): 36806400

約数和(自身を除く): 15325983

約数列:

[1, 3, 7, 9, 21, 27, 63, 89, 189, 267, 623, 801, 1277, 1869, 2403, 3831, 5607, 8939, 11493, 16821, 26817, 34479, 80451, 113653, 241353, 340959, 795571, 1022877, 2386713, 3068631, 7160139, 21480417]

約数ペア:

[(1, 21480417), (3, 7160139), (7, 3068631), (9, 2386713), (21, 1022877), (27, 795571), (63, 340959), (89, 241353), (189, 113653), (267, 80451), (623, 34479), (801, 26817), (1277, 16821), (1869, 11493), (2403, 8939), (3831, 5607)]