21538167

素因数分解:

$3^1\times 7^1\times {\mathrm{17}}^1\times {\mathrm{60331}}^1$

素因数の和:60358

約数の個数: 16

約数和(自身を含む): 34751232

約数和(自身を除く): 13213065

約数列:

[1, 3, 7, 17, 21, 51, 119, 357, 60331, 180993, 422317, 1025627, 1266951, 3076881, 7179389, 21538167]

約数ペア:

[(1, 21538167), (3, 7179389), (7, 3076881), (17, 1266951), (21, 1025627), (51, 422317), (119, 180993), (357, 60331)]