21431886

素因数分解:

$2^1\times 3^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{107}}^1\times {\mathrm{251}}^1$

素因数の和:389

約数の個数: 64

約数和(自身を含む): 52254720

約数和(自身を除く): 30822834

約数列:

[1, 2, 3, 6, 7, 14, 19, 21, 38, 42, 57, 107, 114, 133, 214, 251, 266, 321, 399, 502, 642, 749, 753, 798, 1498, 1506, 1757, 2033, 2247, 3514, 4066, 4494, 4769, 5271, 6099, 9538, 10542, 12198, 14231, 14307, 26857, 28462, 28614, 33383, 42693, 53714, 66766, 80571, 85386, 100149, 161142, 187999, 200298, 375998, 510283, 563997, 1020566, 1127994, 1530849, 3061698, 3571981, 7143962, 10715943, 21431886]

約数ペア:

[(1, 21431886), (2, 10715943), (3, 7143962), (6, 3571981), (7, 3061698), (14, 1530849), (19, 1127994), (21, 1020566), (38, 563997), (42, 510283), (57, 375998), (107, 200298), (114, 187999), (133, 161142), (214, 100149), (251, 85386), (266, 80571), (321, 66766), (399, 53714), (502, 42693), (642, 33383), (749, 28614), (753, 28462), (798, 26857), (1498, 14307), (1506, 14231), (1757, 12198), (2033, 10542), (2247, 9538), (3514, 6099), (4066, 5271), (4494, 4769)]