21054821

素因数分解:

${\mathrm{23}}^1\times {\mathrm{43}}^1\times {\mathrm{61}}^1\times {\mathrm{349}}^1$

素因数の和:476

約数の個数: 16

約数和(自身を含む): 22915200

約数和(自身を除く): 1860379

約数列:

[1, 23, 43, 61, 349, 989, 1403, 2623, 8027, 15007, 21289, 60329, 345161, 489647, 915427, 21054821]

約数ペア:

[(1, 21054821), (23, 915427), (43, 489647), (61, 345161), (349, 60329), (989, 21289), (1403, 15007), (2623, 8027)]