21146643

素因数分解:

$3^3\times 7^1\times {\mathrm{127}}^1\times {\mathrm{881}}^1$

素因数の和:1024

約数の個数: 32

約数和(自身を含む): 36126720

約数和(自身を除く): 14980077

約数列:

[1, 3, 7, 9, 21, 27, 63, 127, 189, 381, 881, 889, 1143, 2643, 2667, 3429, 6167, 7929, 8001, 18501, 23787, 24003, 55503, 111887, 166509, 335661, 783209, 1006983, 2349627, 3020949, 7048881, 21146643]

約数ペア:

[(1, 21146643), (3, 7048881), (7, 3020949), (9, 2349627), (21, 1006983), (27, 783209), (63, 335661), (127, 166509), (189, 111887), (381, 55503), (881, 24003), (889, 23787), (1143, 18501), (2643, 8001), (2667, 7929), (3429, 6167)]