21078720

素因数分解:

$2^6\times 3^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{563}}^1$

素因数の和:599

約数の個数: 168

約数和(自身を含む): 78217776

約数和(自身を除く): 57139056

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 13, 15, 16, 18, 20, 24, 26, 30, 32, 36, 39, 40, 45, 48, 52, 60, 64, 65, 72, 78, 80, 90, 96, 104, 117, 120, 130, 144, 156, 160, 180, 192, 195, 208, 234, 240, 260, 288, 312, 320, 360, 390, 416, 468, 480, 520, 563, 576, 585, 624, 720, 780, 832, 936, 960, 1040, 1126, 1170, 1248, 1440, 1560, 1689, 1872, 2080, 2252, 2340, 2496, 2815, 2880, 3120, 3378, 3744, 4160, 4504, 4680, 5067, 5630, 6240, 6756, 7319, 7488, 8445, 9008, 9360, 10134, 11260, 12480, 13512, 14638, 16890, 18016, 18720, 20268, 21957, 22520, 25335, 27024, 29276, 33780, 36032, 36595, 37440, 40536, 43914, 45040, 50670, 54048, 58552, 65871, 67560, 73190, 81072, 87828, 90080, 101340, 108096, 109785, 117104, 131742, 135120, 146380, 162144, 175656, 180160, 202680, 219570, 234208, 263484, 270240, 292760, 324288, 329355, 351312, 405360, 439140, 468416, 526968, 540480, 585520, 658710, 702624, 810720, 878280, 1053936, 1171040, 1317420, 1405248, 1621440, 1756560, 2107872, 2342080, 2634840, 3513120, 4215744, 5269680, 7026240, 10539360, 21078720]

約数ペア:

[(1, 21078720), (2, 10539360), (3, 7026240), (4, 5269680), (5, 4215744), (6, 3513120), (8, 2634840), (9, 2342080), (10, 2107872), (12, 1756560), (13, 1621440), (15, 1405248), (16, 1317420), (18, 1171040), (20, 1053936), (24, 878280), (26, 810720), (30, 702624), (32, 658710), (36, 585520), (39, 540480), (40, 526968), (45, 468416), (48, 439140), (52, 405360), (60, 351312), (64, 329355), (65, 324288), (72, 292760), (78, 270240), (80, 263484), (90, 234208), (96, 219570), (104, 202680), (117, 180160), (120, 175656), (130, 162144), (144, 146380), (156, 135120), (160, 131742), (180, 117104), (192, 109785), (195, 108096), (208, 101340), (234, 90080), (240, 87828), (260, 81072), (288, 73190), (312, 67560), (320, 65871), (360, 58552), (390, 54048), (416, 50670), (468, 45040), (480, 43914), (520, 40536), (563, 37440), (576, 36595), (585, 36032), (624, 33780), (720, 29276), (780, 27024), (832, 25335), (936, 22520), (960, 21957), (1040, 20268), (1126, 18720), (1170, 18016), (1248, 16890), (1440, 14638), (1560, 13512), (1689, 12480), (1872, 11260), (2080, 10134), (2252, 9360), (2340, 9008), (2496, 8445), (2815, 7488), (2880, 7319), (3120, 6756), (3378, 6240), (3744, 5630), (4160, 5067), (4504, 4680)]