25760007

素因数分解:

$3^2\times 7^1\times {\mathrm{13}}^1\times {\mathrm{71}}^1\times {\mathrm{443}}^1$

素因数の和:540

約数の個数: 48

約数和(自身を含む): 46545408

約数和(自身を除く): 20785401

約数列:

[1, 3, 7, 9, 13, 21, 39, 63, 71, 91, 117, 213, 273, 443, 497, 639, 819, 923, 1329, 1491, 2769, 3101, 3987, 4473, 5759, 6461, 8307, 9303, 17277, 19383, 27909, 31453, 40313, 51831, 58149, 94359, 120939, 220171, 283077, 362817, 408889, 660513, 1226667, 1981539, 2862223, 3680001, 8586669, 25760007]

約数ペア:

[(1, 25760007), (3, 8586669), (7, 3680001), (9, 2862223), (13, 1981539), (21, 1226667), (39, 660513), (63, 408889), (71, 362817), (91, 283077), (117, 220171), (213, 120939), (273, 94359), (443, 58149), (497, 51831), (639, 40313), (819, 31453), (923, 27909), (1329, 19383), (1491, 17277), (2769, 9303), (3101, 8307), (3987, 6461), (4473, 5759)]