20216469

素因数分解:

$3^1\times 7^2\times {\mathrm{13}}^1\times {\mathrm{71}}^1\times {\mathrm{149}}^1$

素因数の和:250

約数の個数: 48

約数和(自身を含む): 34473600

約数和(自身を除く): 14257131

約数列:

[1, 3, 7, 13, 21, 39, 49, 71, 91, 147, 149, 213, 273, 447, 497, 637, 923, 1043, 1491, 1911, 1937, 2769, 3129, 3479, 5811, 6461, 7301, 10437, 10579, 13559, 19383, 21903, 31737, 40677, 45227, 74053, 94913, 135681, 137527, 222159, 284739, 412581, 518371, 962689, 1555113, 2888067, 6738823, 20216469]

約数ペア:

[(1, 20216469), (3, 6738823), (7, 2888067), (13, 1555113), (21, 962689), (39, 518371), (49, 412581), (71, 284739), (91, 222159), (147, 137527), (149, 135681), (213, 94913), (273, 74053), (447, 45227), (497, 40677), (637, 31737), (923, 21903), (1043, 19383), (1491, 13559), (1911, 10579), (1937, 10437), (2769, 7301), (3129, 6461), (3479, 5811)]