21398066

素因数分解:

$2^1\times {\mathrm{19}}^1\times {\mathrm{47}}^1\times {\mathrm{11981}}^1$

素因数の和:12049

約数の個数: 16

約数和(自身を含む): 34508160

約数和(自身を除く): 13110094

約数列:

[1, 2, 19, 38, 47, 94, 893, 1786, 11981, 23962, 227639, 455278, 563107, 1126214, 10699033, 21398066]

約数ペア:

[(1, 21398066), (2, 10699033), (19, 1126214), (38, 563107), (47, 455278), (94, 227639), (893, 23962), (1786, 11981)]