21052320

素因数分解:

$2^5\times 3^1\times 5^1\times {\mathrm{61}}^1\times {\mathrm{719}}^1$

素因数の和:798

約数の個数: 96

約数和(自身を含む): 67495680

約数和(自身を除く): 46443360

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 20, 24, 30, 32, 40, 48, 60, 61, 80, 96, 120, 122, 160, 183, 240, 244, 305, 366, 480, 488, 610, 719, 732, 915, 976, 1220, 1438, 1464, 1830, 1952, 2157, 2440, 2876, 2928, 3595, 3660, 4314, 4880, 5752, 5856, 7190, 7320, 8628, 9760, 10785, 11504, 14380, 14640, 17256, 21570, 23008, 28760, 29280, 34512, 43140, 43859, 57520, 69024, 86280, 87718, 115040, 131577, 172560, 175436, 219295, 263154, 345120, 350872, 438590, 526308, 657885, 701744, 877180, 1052616, 1315770, 1403488, 1754360, 2105232, 2631540, 3508720, 4210464, 5263080, 7017440, 10526160, 21052320]

約数ペア:

[(1, 21052320), (2, 10526160), (3, 7017440), (4, 5263080), (5, 4210464), (6, 3508720), (8, 2631540), (10, 2105232), (12, 1754360), (15, 1403488), (16, 1315770), (20, 1052616), (24, 877180), (30, 701744), (32, 657885), (40, 526308), (48, 438590), (60, 350872), (61, 345120), (80, 263154), (96, 219295), (120, 175436), (122, 172560), (160, 131577), (183, 115040), (240, 87718), (244, 86280), (305, 69024), (366, 57520), (480, 43859), (488, 43140), (610, 34512), (719, 29280), (732, 28760), (915, 23008), (976, 21570), (1220, 17256), (1438, 14640), (1464, 14380), (1830, 11504), (1952, 10785), (2157, 9760), (2440, 8628), (2876, 7320), (2928, 7190), (3595, 5856), (3660, 5752), (4314, 4880)]