21223874

素因数分解:

$2^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{73}}^1\times {\mathrm{1093}}^1$

素因数の和:1194

約数の個数: 32

約数和(自身を含む): 38858880

約数和(自身を除く): 17635006

約数列:

[1, 2, 7, 14, 19, 38, 73, 133, 146, 266, 511, 1022, 1093, 1387, 2186, 2774, 7651, 9709, 15302, 19418, 20767, 41534, 79789, 145369, 159578, 290738, 558523, 1117046, 1515991, 3031982, 10611937, 21223874]

約数ペア:

[(1, 21223874), (2, 10611937), (7, 3031982), (14, 1515991), (19, 1117046), (38, 558523), (73, 290738), (133, 159578), (146, 145369), (266, 79789), (511, 41534), (1022, 20767), (1093, 19418), (1387, 15302), (2186, 9709), (2774, 7651)]