21068968

素因数分解:

$2^3\times {\mathrm{43}}^1\times {\mathrm{73}}^1\times {\mathrm{839}}^1$

素因数の和:961

約数の個数: 32

約数和(自身を含む): 41025600

約数和(自身を除く): 19956632

約数列:

[1, 2, 4, 8, 43, 73, 86, 146, 172, 292, 344, 584, 839, 1678, 3139, 3356, 6278, 6712, 12556, 25112, 36077, 61247, 72154, 122494, 144308, 244988, 288616, 489976, 2633621, 5267242, 10534484, 21068968]

約数ペア:

[(1, 21068968), (2, 10534484), (4, 5267242), (8, 2633621), (43, 489976), (73, 288616), (86, 244988), (146, 144308), (172, 122494), (292, 72154), (344, 61247), (584, 36077), (839, 25112), (1678, 12556), (3139, 6712), (3356, 6278)]