20788560

素因数分解:

$2^4\times 3^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{2221}}^1$

素因数の和:2253

約数の個数: 120

約数和(自身を含む): 75219144

約数和(自身を除く): 54430584

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 13, 15, 16, 18, 20, 24, 26, 30, 36, 39, 40, 45, 48, 52, 60, 65, 72, 78, 80, 90, 104, 117, 120, 130, 144, 156, 180, 195, 208, 234, 240, 260, 312, 360, 390, 468, 520, 585, 624, 720, 780, 936, 1040, 1170, 1560, 1872, 2221, 2340, 3120, 4442, 4680, 6663, 8884, 9360, 11105, 13326, 17768, 19989, 22210, 26652, 28873, 33315, 35536, 39978, 44420, 53304, 57746, 66630, 79956, 86619, 88840, 99945, 106608, 115492, 133260, 144365, 159912, 173238, 177680, 199890, 230984, 259857, 266520, 288730, 319824, 346476, 399780, 433095, 461968, 519714, 533040, 577460, 692952, 799560, 866190, 1039428, 1154920, 1299285, 1385904, 1599120, 1732380, 2078856, 2309840, 2598570, 3464760, 4157712, 5197140, 6929520, 10394280, 20788560]

約数ペア:

[(1, 20788560), (2, 10394280), (3, 6929520), (4, 5197140), (5, 4157712), (6, 3464760), (8, 2598570), (9, 2309840), (10, 2078856), (12, 1732380), (13, 1599120), (15, 1385904), (16, 1299285), (18, 1154920), (20, 1039428), (24, 866190), (26, 799560), (30, 692952), (36, 577460), (39, 533040), (40, 519714), (45, 461968), (48, 433095), (52, 399780), (60, 346476), (65, 319824), (72, 288730), (78, 266520), (80, 259857), (90, 230984), (104, 199890), (117, 177680), (120, 173238), (130, 159912), (144, 144365), (156, 133260), (180, 115492), (195, 106608), (208, 99945), (234, 88840), (240, 86619), (260, 79956), (312, 66630), (360, 57746), (390, 53304), (468, 44420), (520, 39978), (585, 35536), (624, 33315), (720, 28873), (780, 26652), (936, 22210), (1040, 19989), (1170, 17768), (1560, 13326), (1872, 11105), (2221, 9360), (2340, 8884), (3120, 6663), (4442, 4680)]