21187318

素因数分解:

$2^1\times {\mathrm{19}}^1\times {\mathrm{47}}^1\times {\mathrm{11863}}^1$

素因数の和:11931

約数の個数: 16

約数和(自身を含む): 34168320

約数和(自身を除く): 12981002

約数列:

[1, 2, 19, 38, 47, 94, 893, 1786, 11863, 23726, 225397, 450794, 557561, 1115122, 10593659, 21187318]

約数ペア:

[(1, 21187318), (2, 10593659), (19, 1115122), (38, 557561), (47, 450794), (94, 225397), (893, 23726), (1786, 11863)]