81968640

素因数分解:

$2^9\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{821}}^1$

素因数の和:860

約数の個数: 160

約数和(自身を含む): 282544416

約数和(自身を除く): 200575776

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 13, 15, 16, 20, 24, 26, 30, 32, 39, 40, 48, 52, 60, 64, 65, 78, 80, 96, 104, 120, 128, 130, 156, 160, 192, 195, 208, 240, 256, 260, 312, 320, 384, 390, 416, 480, 512, 520, 624, 640, 768, 780, 821, 832, 960, 1040, 1248, 1280, 1536, 1560, 1642, 1664, 1920, 2080, 2463, 2496, 2560, 3120, 3284, 3328, 3840, 4105, 4160, 4926, 4992, 6240, 6568, 6656, 7680, 8210, 8320, 9852, 9984, 10673, 12315, 12480, 13136, 16420, 16640, 19704, 19968, 21346, 24630, 24960, 26272, 32019, 32840, 33280, 39408, 42692, 49260, 49920, 52544, 53365, 64038, 65680, 78816, 85384, 98520, 99840, 105088, 106730, 128076, 131360, 157632, 160095, 170768, 197040, 210176, 213460, 256152, 262720, 315264, 320190, 341536, 394080, 420352, 426920, 512304, 525440, 630528, 640380, 683072, 788160, 853840, 1024608, 1050880, 1261056, 1280760, 1366144, 1576320, 1707680, 2049216, 2101760, 2561520, 2732288, 3152640, 3415360, 4098432, 5123040, 5464576, 6305280, 6830720, 8196864, 10246080, 13661440, 16393728, 20492160, 27322880, 40984320, 81968640]

約数ペア:

[(1, 81968640), (2, 40984320), (3, 27322880), (4, 20492160), (5, 16393728), (6, 13661440), (8, 10246080), (10, 8196864), (12, 6830720), (13, 6305280), (15, 5464576), (16, 5123040), (20, 4098432), (24, 3415360), (26, 3152640), (30, 2732288), (32, 2561520), (39, 2101760), (40, 2049216), (48, 1707680), (52, 1576320), (60, 1366144), (64, 1280760), (65, 1261056), (78, 1050880), (80, 1024608), (96, 853840), (104, 788160), (120, 683072), (128, 640380), (130, 630528), (156, 525440), (160, 512304), (192, 426920), (195, 420352), (208, 394080), (240, 341536), (256, 320190), (260, 315264), (312, 262720), (320, 256152), (384, 213460), (390, 210176), (416, 197040), (480, 170768), (512, 160095), (520, 157632), (624, 131360), (640, 128076), (768, 106730), (780, 105088), (821, 99840), (832, 98520), (960, 85384), (1040, 78816), (1248, 65680), (1280, 64038), (1536, 53365), (1560, 52544), (1642, 49920), (1664, 49260), (1920, 42692), (2080, 39408), (2463, 33280), (2496, 32840), (2560, 32019), (3120, 26272), (3284, 24960), (3328, 24630), (3840, 21346), (4105, 19968), (4160, 19704), (4926, 16640), (4992, 16420), (6240, 13136), (6568, 12480), (6656, 12315), (7680, 10673), (8210, 9984), (8320, 9852)]