21143997

素因数分解:

$3^4\times 7^1\times {\mathrm{89}}^1\times {\mathrm{419}}^1$

素因数の和:527

約数の個数: 40

約数和(自身を含む): 36590400

約数和(自身を除く): 15446403

約数列:

[1, 3, 7, 9, 21, 27, 63, 81, 89, 189, 267, 419, 567, 623, 801, 1257, 1869, 2403, 2933, 3771, 5607, 7209, 8799, 11313, 16821, 26397, 33939, 37291, 50463, 79191, 111873, 237573, 261037, 335619, 783111, 1006857, 2349333, 3020571, 7047999, 21143997]

約数ペア:

[(1, 21143997), (3, 7047999), (7, 3020571), (9, 2349333), (21, 1006857), (27, 783111), (63, 335619), (81, 261037), (89, 237573), (189, 111873), (267, 79191), (419, 50463), (567, 37291), (623, 33939), (801, 26397), (1257, 16821), (1869, 11313), (2403, 8799), (2933, 7209), (3771, 5607)]