21197760

素因数分解:

$2^6\times 3^1\times 5^1\times {\mathrm{71}}^1\times {\mathrm{311}}^1$

素因数の和:402

約数の個数: 112

約数和(自身を含む): 68470272

約数和(自身を除く): 47272512

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 20, 24, 30, 32, 40, 48, 60, 64, 71, 80, 96, 120, 142, 160, 192, 213, 240, 284, 311, 320, 355, 426, 480, 568, 622, 710, 852, 933, 960, 1065, 1136, 1244, 1420, 1555, 1704, 1866, 2130, 2272, 2488, 2840, 3110, 3408, 3732, 4260, 4544, 4665, 4976, 5680, 6220, 6816, 7464, 8520, 9330, 9952, 11360, 12440, 13632, 14928, 17040, 18660, 19904, 22081, 22720, 24880, 29856, 34080, 37320, 44162, 49760, 59712, 66243, 68160, 74640, 88324, 99520, 110405, 132486, 149280, 176648, 220810, 264972, 298560, 331215, 353296, 441620, 529944, 662430, 706592, 883240, 1059888, 1324860, 1413184, 1766480, 2119776, 2649720, 3532960, 4239552, 5299440, 7065920, 10598880, 21197760]

約数ペア:

[(1, 21197760), (2, 10598880), (3, 7065920), (4, 5299440), (5, 4239552), (6, 3532960), (8, 2649720), (10, 2119776), (12, 1766480), (15, 1413184), (16, 1324860), (20, 1059888), (24, 883240), (30, 706592), (32, 662430), (40, 529944), (48, 441620), (60, 353296), (64, 331215), (71, 298560), (80, 264972), (96, 220810), (120, 176648), (142, 149280), (160, 132486), (192, 110405), (213, 99520), (240, 88324), (284, 74640), (311, 68160), (320, 66243), (355, 59712), (426, 49760), (480, 44162), (568, 37320), (622, 34080), (710, 29856), (852, 24880), (933, 22720), (960, 22081), (1065, 19904), (1136, 18660), (1244, 17040), (1420, 14928), (1555, 13632), (1704, 12440), (1866, 11360), (2130, 9952), (2272, 9330), (2488, 8520), (2840, 7464), (3110, 6816), (3408, 6220), (3732, 5680), (4260, 4976), (4544, 4665)]