256447800

素因数分解:

$2^3\times 3^2\times 5^2\times 7^1\times {\mathrm{20353}}^1$

素因数の和:20382

約数の個数: 144

約数和(自身を含む): 984319440

約数和(自身を除く): 727871640

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 12, 14, 15, 18, 20, 21, 24, 25, 28, 30, 35, 36, 40, 42, 45, 50, 56, 60, 63, 70, 72, 75, 84, 90, 100, 105, 120, 126, 140, 150, 168, 175, 180, 200, 210, 225, 252, 280, 300, 315, 350, 360, 420, 450, 504, 525, 600, 630, 700, 840, 900, 1050, 1260, 1400, 1575, 1800, 2100, 2520, 3150, 4200, 6300, 12600, 20353, 40706, 61059, 81412, 101765, 122118, 142471, 162824, 183177, 203530, 244236, 284942, 305295, 366354, 407060, 427413, 488472, 508825, 569884, 610590, 712355, 732708, 814120, 854826, 915885, 1017650, 1139768, 1221180, 1282239, 1424710, 1465416, 1526475, 1709652, 1831770, 2035300, 2137065, 2442360, 2564478, 2849420, 3052950, 3419304, 3561775, 3663540, 4070600, 4274130, 4579425, 5128956, 5698840, 6105900, 6411195, 7123550, 7327080, 8548260, 9158850, 10257912, 10685325, 12211800, 12822390, 14247100, 17096520, 18317700, 21370650, 25644780, 28494200, 32055975, 36635400, 42741300, 51289560, 64111950, 85482600, 128223900, 256447800]

約数ペア:

[(1, 256447800), (2, 128223900), (3, 85482600), (4, 64111950), (5, 51289560), (6, 42741300), (7, 36635400), (8, 32055975), (9, 28494200), (10, 25644780), (12, 21370650), (14, 18317700), (15, 17096520), (18, 14247100), (20, 12822390), (21, 12211800), (24, 10685325), (25, 10257912), (28, 9158850), (30, 8548260), (35, 7327080), (36, 7123550), (40, 6411195), (42, 6105900), (45, 5698840), (50, 5128956), (56, 4579425), (60, 4274130), (63, 4070600), (70, 3663540), (72, 3561775), (75, 3419304), (84, 3052950), (90, 2849420), (100, 2564478), (105, 2442360), (120, 2137065), (126, 2035300), (140, 1831770), (150, 1709652), (168, 1526475), (175, 1465416), (180, 1424710), (200, 1282239), (210, 1221180), (225, 1139768), (252, 1017650), (280, 915885), (300, 854826), (315, 814120), (350, 732708), (360, 712355), (420, 610590), (450, 569884), (504, 508825), (525, 488472), (600, 427413), (630, 407060), (700, 366354), (840, 305295), (900, 284942), (1050, 244236), (1260, 203530), (1400, 183177), (1575, 162824), (1800, 142471), (2100, 122118), (2520, 101765), (3150, 81412), (4200, 61059), (6300, 40706), (12600, 20353)]