21867321

素因数分解:

$3^1\times 7^1\times {\mathrm{17}}^1\times {\mathrm{61253}}^1$

素因数の和:61280

約数の個数: 16

約数和(自身を含む): 35282304

約数和(自身を除く): 13414983

約数列:

[1, 3, 7, 17, 21, 51, 119, 357, 61253, 183759, 428771, 1041301, 1286313, 3123903, 7289107, 21867321]

約数ペア:

[(1, 21867321), (3, 7289107), (7, 3123903), (17, 1286313), (21, 1041301), (51, 428771), (119, 183759), (357, 61253)]