21005358615

素因数分解:

$3^7\times 5^1\times {\mathrm{37}}^1\times {\mathrm{193}}^1\times {\mathrm{269}}^1$

素因数の和:525

約数の個数: 128

約数和(自身を含む): 39171859200

約数和(自身を除く): 18166500585

約数列:

[1, 3, 5, 9, 15, 27, 37, 45, 81, 111, 135, 185, 193, 243, 269, 333, 405, 555, 579, 729, 807, 965, 999, 1215, 1345, 1665, 1737, 2187, 2421, 2895, 2997, 3645, 4035, 4995, 5211, 7141, 7263, 8685, 8991, 9953, 10935, 12105, 14985, 15633, 21423, 21789, 26055, 26973, 29859, 35705, 36315, 44955, 46899, 49765, 51917, 64269, 65367, 78165, 80919, 89577, 107115, 108945, 134865, 140697, 149295, 155751, 192807, 196101, 234495, 259585, 268731, 321345, 326835, 404595, 422091, 447885, 467253, 578421, 588303, 703485, 778755, 806193, 964035, 980505, 1343655, 1401759, 1735263, 1920929, 2110455, 2336265, 2418579, 2892105, 2941515, 4030965, 4205277, 5205789, 5762787, 7008795, 7255737, 8676315, 9604645, 12092895, 12615831, 15617367, 17288361, 21026385, 21767211, 26028945, 28813935, 36278685, 37847493, 51865083, 63079155, 78086835, 86441805, 108836055, 113542479, 155595249, 189237465, 259325415, 466785747, 567712395, 777976245, 1400357241, 2333928735, 4201071723, 7001786205, 21005358615]

約数ペア:

[(1, 21005358615), (3, 7001786205), (5, 4201071723), (9, 2333928735), (15, 1400357241), (27, 777976245), (37, 567712395), (45, 466785747), (81, 259325415), (111, 189237465), (135, 155595249), (185, 113542479), (193, 108836055), (243, 86441805), (269, 78086835), (333, 63079155), (405, 51865083), (555, 37847493), (579, 36278685), (729, 28813935), (807, 26028945), (965, 21767211), (999, 21026385), (1215, 17288361), (1345, 15617367), (1665, 12615831), (1737, 12092895), (2187, 9604645), (2421, 8676315), (2895, 7255737), (2997, 7008795), (3645, 5762787), (4035, 5205789), (4995, 4205277), (5211, 4030965), (7141, 2941515), (7263, 2892105), (8685, 2418579), (8991, 2336265), (9953, 2110455), (10935, 1920929), (12105, 1735263), (14985, 1401759), (15633, 1343655), (21423, 980505), (21789, 964035), (26055, 806193), (26973, 778755), (29859, 703485), (35705, 588303), (36315, 578421), (44955, 467253), (46899, 447885), (49765, 422091), (51917, 404595), (64269, 326835), (65367, 321345), (78165, 268731), (80919, 259585), (89577, 234495), (107115, 196101), (108945, 192807), (134865, 155751), (140697, 149295)]