20492160

素因数分解:

$2^7\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{821}}^1$

素因数の和:856

約数の個数: 128

約数和(自身を含む): 70428960

約数和(自身を除く): 49936800

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, 260, 312, 320, 384, 390, 416, 480, 520, 624, 640, 780, 821, 832, 960, 1040, 1248, 1560, 1642, 1664, 1920, 2080, 2463, 2496, 3120, 3284, 4105, 4160, 4926, 4992, 6240, 6568, 8210, 8320, 9852, 10673, 12315, 12480, 13136, 16420, 19704, 21346, 24630, 24960, 26272, 32019, 32840, 39408, 42692, 49260, 52544, 53365, 64038, 65680, 78816, 85384, 98520, 105088, 106730, 128076, 131360, 157632, 160095, 170768, 197040, 213460, 256152, 262720, 315264, 320190, 341536, 394080, 426920, 512304, 525440, 640380, 683072, 788160, 853840, 1024608, 1280760, 1366144, 1576320, 1707680, 2049216, 2561520, 3415360, 4098432, 5123040, 6830720, 10246080, 20492160]

約数ペア:

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