280628400

素因数分解:

$2^4\times 3^1\times 5^2\times {\mathrm{13}}^1\times {\mathrm{17989}}^1$

素因数の和:18023

約数の個数: 120

約数和(自身を含む): 968149840

約数和(自身を除く): 687521440

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 13, 15, 16, 20, 24, 25, 26, 30, 39, 40, 48, 50, 52, 60, 65, 75, 78, 80, 100, 104, 120, 130, 150, 156, 195, 200, 208, 240, 260, 300, 312, 325, 390, 400, 520, 600, 624, 650, 780, 975, 1040, 1200, 1300, 1560, 1950, 2600, 3120, 3900, 5200, 7800, 15600, 17989, 35978, 53967, 71956, 89945, 107934, 143912, 179890, 215868, 233857, 269835, 287824, 359780, 431736, 449725, 467714, 539670, 701571, 719560, 863472, 899450, 935428, 1079340, 1169285, 1349175, 1403142, 1439120, 1798900, 1870856, 2158680, 2338570, 2698350, 2806284, 3507855, 3597800, 3741712, 4317360, 4677140, 5396700, 5612568, 5846425, 7015710, 7195600, 9354280, 10793400, 11225136, 11692850, 14031420, 17539275, 18708560, 21586800, 23385700, 28062840, 35078550, 46771400, 56125680, 70157100, 93542800, 140314200, 280628400]

約数ペア:

[(1, 280628400), (2, 140314200), (3, 93542800), (4, 70157100), (5, 56125680), (6, 46771400), (8, 35078550), (10, 28062840), (12, 23385700), (13, 21586800), (15, 18708560), (16, 17539275), (20, 14031420), (24, 11692850), (25, 11225136), (26, 10793400), (30, 9354280), (39, 7195600), (40, 7015710), (48, 5846425), (50, 5612568), (52, 5396700), (60, 4677140), (65, 4317360), (75, 3741712), (78, 3597800), (80, 3507855), (100, 2806284), (104, 2698350), (120, 2338570), (130, 2158680), (150, 1870856), (156, 1798900), (195, 1439120), (200, 1403142), (208, 1349175), (240, 1169285), (260, 1079340), (300, 935428), (312, 899450), (325, 863472), (390, 719560), (400, 701571), (520, 539670), (600, 467714), (624, 449725), (650, 431736), (780, 359780), (975, 287824), (1040, 269835), (1200, 233857), (1300, 215868), (1560, 179890), (1950, 143912), (2600, 107934), (3120, 89945), (3900, 71956), (5200, 53967), (7800, 35978), (15600, 17989)]