21892719

素因数分解:

$3^1\times {\mathrm{17}}^1\times {\mathrm{43}}^1\times {\mathrm{67}}^1\times {\mathrm{149}}^1$

素因数の和:279

約数の個数: 32

約数和(自身を含む): 32313600

約数和(自身を除く): 10420881

約数列:

[1, 3, 17, 43, 51, 67, 129, 149, 201, 447, 731, 1139, 2193, 2533, 2881, 3417, 6407, 7599, 8643, 9983, 19221, 29949, 48977, 108919, 146931, 169711, 326757, 429269, 509133, 1287807, 7297573, 21892719]

約数ペア:

[(1, 21892719), (3, 7297573), (17, 1287807), (43, 509133), (51, 429269), (67, 326757), (129, 169711), (149, 146931), (201, 108919), (447, 48977), (731, 29949), (1139, 19221), (2193, 9983), (2533, 8643), (2881, 7599), (3417, 6407)]