640468800

素因数分解:

$2^6\times 3^2\times 5^2\times {\mathrm{79}}^1\times {\mathrm{563}}^1$

素因数の和:670

約数の個数: 252

約数和(自身を含む): 2309286720

約数和(自身を除く): 1668817920

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 16, 18, 20, 24, 25, 30, 32, 36, 40, 45, 48, 50, 60, 64, 72, 75, 79, 80, 90, 96, 100, 120, 144, 150, 158, 160, 180, 192, 200, 225, 237, 240, 288, 300, 316, 320, 360, 395, 400, 450, 474, 480, 563, 576, 600, 632, 711, 720, 790, 800, 900, 948, 960, 1126, 1185, 1200, 1264, 1422, 1440, 1580, 1600, 1689, 1800, 1896, 1975, 2252, 2370, 2400, 2528, 2815, 2844, 2880, 3160, 3378, 3555, 3600, 3792, 3950, 4504, 4740, 4800, 5056, 5067, 5630, 5688, 5925, 6320, 6756, 7110, 7200, 7584, 7900, 8445, 9008, 9480, 10134, 11260, 11376, 11850, 12640, 13512, 14075, 14220, 14400, 15168, 15800, 16890, 17775, 18016, 18960, 20268, 22520, 22752, 23700, 25280, 25335, 27024, 28150, 28440, 31600, 33780, 35550, 36032, 37920, 40536, 42225, 44477, 45040, 45504, 47400, 50670, 54048, 56300, 56880, 63200, 67560, 71100, 75840, 81072, 84450, 88954, 90080, 94800, 101340, 108096, 112600, 113760, 126400, 126675, 133431, 135120, 142200, 162144, 168900, 177908, 180160, 189600, 202680, 222385, 225200, 227520, 253350, 266862, 270240, 284400, 324288, 337800, 355816, 379200, 400293, 405360, 444770, 450400, 506700, 533724, 540480, 568800, 667155, 675600, 711632, 800586, 810720, 889540, 900800, 1013400, 1067448, 1111925, 1137600, 1334310, 1351200, 1423264, 1601172, 1621440, 1779080, 2001465, 2026800, 2134896, 2223850, 2668620, 2702400, 2846528, 3202344, 3335775, 3558160, 4002930, 4053600, 4269792, 4447700, 5337240, 6404688, 6671550, 7116320, 8005860, 8107200, 8539584, 8895400, 10007325, 10674480, 12809376, 13343100, 14232640, 16011720, 17790800, 20014650, 21348960, 25618752, 26686200, 32023440, 35581600, 40029300, 42697920, 53372400, 64046880, 71163200, 80058600, 106744800, 128093760, 160117200, 213489600, 320234400, 640468800]

約数ペア:

[(1, 640468800), (2, 320234400), (3, 213489600), (4, 160117200), (5, 128093760), (6, 106744800), (8, 80058600), (9, 71163200), (10, 64046880), (12, 53372400), (15, 42697920), (16, 40029300), (18, 35581600), (20, 32023440), (24, 26686200), (25, 25618752), (30, 21348960), (32, 20014650), (36, 17790800), (40, 16011720), (45, 14232640), (48, 13343100), (50, 12809376), (60, 10674480), (64, 10007325), (72, 8895400), (75, 8539584), (79, 8107200), (80, 8005860), (90, 7116320), (96, 6671550), (100, 6404688), (120, 5337240), (144, 4447700), (150, 4269792), (158, 4053600), (160, 4002930), (180, 3558160), (192, 3335775), (200, 3202344), (225, 2846528), (237, 2702400), (240, 2668620), (288, 2223850), (300, 2134896), (316, 2026800), (320, 2001465), (360, 1779080), (395, 1621440), (400, 1601172), (450, 1423264), (474, 1351200), (480, 1334310), (563, 1137600), (576, 1111925), (600, 1067448), (632, 1013400), (711, 900800), (720, 889540), (790, 810720), (800, 800586), (900, 711632), (948, 675600), (960, 667155), (1126, 568800), (1185, 540480), (1200, 533724), (1264, 506700), (1422, 450400), (1440, 444770), (1580, 405360), (1600, 400293), (1689, 379200), (1800, 355816), (1896, 337800), (1975, 324288), (2252, 284400), (2370, 270240), (2400, 266862), (2528, 253350), (2815, 227520), (2844, 225200), (2880, 222385), (3160, 202680), (3378, 189600), (3555, 180160), (3600, 177908), (3792, 168900), (3950, 162144), (4504, 142200), (4740, 135120), (4800, 133431), (5056, 126675), (5067, 126400), (5630, 113760), (5688, 112600), (5925, 108096), (6320, 101340), (6756, 94800), (7110, 90080), (7200, 88954), (7584, 84450), (7900, 81072), (8445, 75840), (9008, 71100), (9480, 67560), (10134, 63200), (11260, 56880), (11376, 56300), (11850, 54048), (12640, 50670), (13512, 47400), (14075, 45504), (14220, 45040), (14400, 44477), (15168, 42225), (15800, 40536), (16890, 37920), (17775, 36032), (18016, 35550), (18960, 33780), (20268, 31600), (22520, 28440), (22752, 28150), (23700, 27024), (25280, 25335)]