81604800

素因数分解:

$2^6\times 3^3\times 5^2\times {\mathrm{1889}}^1$

素因数の和:1920

約数の個数: 168

約数和(自身を含む): 297637200

約数和(自身を除く): 216032400

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 16, 18, 20, 24, 25, 27, 30, 32, 36, 40, 45, 48, 50, 54, 60, 64, 72, 75, 80, 90, 96, 100, 108, 120, 135, 144, 150, 160, 180, 192, 200, 216, 225, 240, 270, 288, 300, 320, 360, 400, 432, 450, 480, 540, 576, 600, 675, 720, 800, 864, 900, 960, 1080, 1200, 1350, 1440, 1600, 1728, 1800, 1889, 2160, 2400, 2700, 2880, 3600, 3778, 4320, 4800, 5400, 5667, 7200, 7556, 8640, 9445, 10800, 11334, 14400, 15112, 17001, 18890, 21600, 22668, 28335, 30224, 34002, 37780, 43200, 45336, 47225, 51003, 56670, 60448, 68004, 75560, 85005, 90672, 94450, 102006, 113340, 120896, 136008, 141675, 151120, 170010, 181344, 188900, 204012, 226680, 255015, 272016, 283350, 302240, 340020, 362688, 377800, 408024, 425025, 453360, 510030, 544032, 566700, 604480, 680040, 755600, 816048, 850050, 906720, 1020060, 1088064, 1133400, 1275075, 1360080, 1511200, 1632096, 1700100, 1813440, 2040120, 2266800, 2550150, 2720160, 3022400, 3264192, 3400200, 4080240, 4533600, 5100300, 5440320, 6800400, 8160480, 9067200, 10200600, 13600800, 16320960, 20401200, 27201600, 40802400, 81604800]

約数ペア:

[(1, 81604800), (2, 40802400), (3, 27201600), (4, 20401200), (5, 16320960), (6, 13600800), (8, 10200600), (9, 9067200), (10, 8160480), (12, 6800400), (15, 5440320), (16, 5100300), (18, 4533600), (20, 4080240), (24, 3400200), (25, 3264192), (27, 3022400), (30, 2720160), (32, 2550150), (36, 2266800), (40, 2040120), (45, 1813440), (48, 1700100), (50, 1632096), (54, 1511200), (60, 1360080), (64, 1275075), (72, 1133400), (75, 1088064), (80, 1020060), (90, 906720), (96, 850050), (100, 816048), (108, 755600), (120, 680040), (135, 604480), (144, 566700), (150, 544032), (160, 510030), (180, 453360), (192, 425025), (200, 408024), (216, 377800), (225, 362688), (240, 340020), (270, 302240), (288, 283350), (300, 272016), (320, 255015), (360, 226680), (400, 204012), (432, 188900), (450, 181344), (480, 170010), (540, 151120), (576, 141675), (600, 136008), (675, 120896), (720, 113340), (800, 102006), (864, 94450), (900, 90672), (960, 85005), (1080, 75560), (1200, 68004), (1350, 60448), (1440, 56670), (1600, 51003), (1728, 47225), (1800, 45336), (1889, 43200), (2160, 37780), (2400, 34002), (2700, 30224), (2880, 28335), (3600, 22668), (3778, 21600), (4320, 18890), (4800, 17001), (5400, 15112), (5667, 14400), (7200, 11334), (7556, 10800), (8640, 9445)]