25642500

素因数分解:

$2^2\times 3^1\times 5^4\times {\mathrm{13}}^1\times {\mathrm{263}}^1$

素因数の和:303

約数の個数: 120

約数和(自身を含む): 80824128

約数和(自身を除く): 55181628

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 13, 15, 20, 25, 26, 30, 39, 50, 52, 60, 65, 75, 78, 100, 125, 130, 150, 156, 195, 250, 260, 263, 300, 325, 375, 390, 500, 526, 625, 650, 750, 780, 789, 975, 1052, 1250, 1300, 1315, 1500, 1578, 1625, 1875, 1950, 2500, 2630, 3156, 3250, 3419, 3750, 3900, 3945, 4875, 5260, 6500, 6575, 6838, 7500, 7890, 8125, 9750, 10257, 13150, 13676, 15780, 16250, 17095, 19500, 19725, 20514, 24375, 26300, 32500, 32875, 34190, 39450, 41028, 48750, 51285, 65750, 68380, 78900, 85475, 97500, 98625, 102570, 131500, 164375, 170950, 197250, 205140, 256425, 328750, 341900, 394500, 427375, 493125, 512850, 657500, 854750, 986250, 1025700, 1282125, 1709500, 1972500, 2136875, 2564250, 4273750, 5128500, 6410625, 8547500, 12821250, 25642500]

約数ペア:

[(1, 25642500), (2, 12821250), (3, 8547500), (4, 6410625), (5, 5128500), (6, 4273750), (10, 2564250), (12, 2136875), (13, 1972500), (15, 1709500), (20, 1282125), (25, 1025700), (26, 986250), (30, 854750), (39, 657500), (50, 512850), (52, 493125), (60, 427375), (65, 394500), (75, 341900), (78, 328750), (100, 256425), (125, 205140), (130, 197250), (150, 170950), (156, 164375), (195, 131500), (250, 102570), (260, 98625), (263, 97500), (300, 85475), (325, 78900), (375, 68380), (390, 65750), (500, 51285), (526, 48750), (625, 41028), (650, 39450), (750, 34190), (780, 32875), (789, 32500), (975, 26300), (1052, 24375), (1250, 20514), (1300, 19725), (1315, 19500), (1500, 17095), (1578, 16250), (1625, 15780), (1875, 13676), (1950, 13150), (2500, 10257), (2630, 9750), (3156, 8125), (3250, 7890), (3419, 7500), (3750, 6838), (3900, 6575), (3945, 6500), (4875, 5260)]