21755678

素因数分解:

$2^1\times 7^1\times {\mathrm{43}}^1\times {\mathrm{71}}^1\times {\mathrm{509}}^1$

素因数の和:632

約数の個数: 32

約数和(自身を含む): 38776320

約数和(自身を除く): 17020642

約数列:

[1, 2, 7, 14, 43, 71, 86, 142, 301, 497, 509, 602, 994, 1018, 3053, 3563, 6106, 7126, 21371, 21887, 36139, 42742, 43774, 72278, 153209, 252973, 306418, 505946, 1553977, 3107954, 10877839, 21755678]

約数ペア:

[(1, 21755678), (2, 10877839), (7, 3107954), (14, 1553977), (43, 505946), (71, 306418), (86, 252973), (142, 153209), (301, 72278), (497, 43774), (509, 42742), (602, 36139), (994, 21887), (1018, 21371), (3053, 7126), (3563, 6106)]