21898887

素因数分解:

$3^1\times {\mathrm{19}}^1\times {\mathrm{163}}^1\times {\mathrm{2357}}^1$

素因数の和:2542

約数の個数: 16

約数和(自身を含む): 30936960

約数和(自身を除く): 9038073

約数列:

[1, 3, 19, 57, 163, 489, 2357, 3097, 7071, 9291, 44783, 134349, 384191, 1152573, 7299629, 21898887]

約数ペア:

[(1, 21898887), (3, 7299629), (19, 1152573), (57, 384191), (163, 134349), (489, 44783), (2357, 9291), (3097, 7071)]