21198720

素因数分解:

$2^7\times 3^1\times 5^1\times {\mathrm{61}}^1\times {\mathrm{181}}^1$

素因数の和:264

約数の個数: 128

約数和(自身を含む): 69058080

約数和(自身を除く): 47859360

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 20, 24, 30, 32, 40, 48, 60, 61, 64, 80, 96, 120, 122, 128, 160, 181, 183, 192, 240, 244, 305, 320, 362, 366, 384, 480, 488, 543, 610, 640, 724, 732, 905, 915, 960, 976, 1086, 1220, 1448, 1464, 1810, 1830, 1920, 1952, 2172, 2440, 2715, 2896, 2928, 3620, 3660, 3904, 4344, 4880, 5430, 5792, 5856, 7240, 7320, 7808, 8688, 9760, 10860, 11041, 11584, 11712, 14480, 14640, 17376, 19520, 21720, 22082, 23168, 23424, 28960, 29280, 33123, 34752, 39040, 43440, 44164, 55205, 57920, 58560, 66246, 69504, 86880, 88328, 110410, 115840, 117120, 132492, 165615, 173760, 176656, 220820, 264984, 331230, 347520, 353312, 441640, 529968, 662460, 706624, 883280, 1059936, 1324920, 1413248, 1766560, 2119872, 2649840, 3533120, 4239744, 5299680, 7066240, 10599360, 21198720]

約数ペア:

[(1, 21198720), (2, 10599360), (3, 7066240), (4, 5299680), (5, 4239744), (6, 3533120), (8, 2649840), (10, 2119872), (12, 1766560), (15, 1413248), (16, 1324920), (20, 1059936), (24, 883280), (30, 706624), (32, 662460), (40, 529968), (48, 441640), (60, 353312), (61, 347520), (64, 331230), (80, 264984), (96, 220820), (120, 176656), (122, 173760), (128, 165615), (160, 132492), (181, 117120), (183, 115840), (192, 110410), (240, 88328), (244, 86880), (305, 69504), (320, 66246), (362, 58560), (366, 57920), (384, 55205), (480, 44164), (488, 43440), (543, 39040), (610, 34752), (640, 33123), (724, 29280), (732, 28960), (905, 23424), (915, 23168), (960, 22082), (976, 21720), (1086, 19520), (1220, 17376), (1448, 14640), (1464, 14480), (1810, 11712), (1830, 11584), (1920, 11041), (1952, 10860), (2172, 9760), (2440, 8688), (2715, 7808), (2896, 7320), (2928, 7240), (3620, 5856), (3660, 5792), (3904, 5430), (4344, 4880)]