19797120

素因数分解:

$2^7\times 3^2\times 5^1\times 7^1\times {\mathrm{491}}^1$

素因数の和:523

約数の個数: 192

約数和(自身を含む): 78287040

約数和(自身を除く): 58489920

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 12, 14, 15, 16, 18, 20, 21, 24, 28, 30, 32, 35, 36, 40, 42, 45, 48, 56, 60, 63, 64, 70, 72, 80, 84, 90, 96, 105, 112, 120, 126, 128, 140, 144, 160, 168, 180, 192, 210, 224, 240, 252, 280, 288, 315, 320, 336, 360, 384, 420, 448, 480, 491, 504, 560, 576, 630, 640, 672, 720, 840, 896, 960, 982, 1008, 1120, 1152, 1260, 1344, 1440, 1473, 1680, 1920, 1964, 2016, 2240, 2455, 2520, 2688, 2880, 2946, 3360, 3437, 3928, 4032, 4419, 4480, 4910, 5040, 5760, 5892, 6720, 6874, 7365, 7856, 8064, 8838, 9820, 10080, 10311, 11784, 13440, 13748, 14730, 15712, 17185, 17676, 19640, 20160, 20622, 22095, 23568, 27496, 29460, 30933, 31424, 34370, 35352, 39280, 40320, 41244, 44190, 47136, 51555, 54992, 58920, 61866, 62848, 68740, 70704, 78560, 82488, 88380, 94272, 103110, 109984, 117840, 123732, 137480, 141408, 154665, 157120, 164976, 176760, 188544, 206220, 219968, 235680, 247464, 274960, 282816, 309330, 314240, 329952, 353520, 412440, 439936, 471360, 494928, 549920, 565632, 618660, 659904, 707040, 824880, 942720, 989856, 1099840, 1237320, 1319808, 1414080, 1649760, 1979712, 2199680, 2474640, 2828160, 3299520, 3959424, 4949280, 6599040, 9898560, 19797120]

約数ペア:

[(1, 19797120), (2, 9898560), (3, 6599040), (4, 4949280), (5, 3959424), (6, 3299520), (7, 2828160), (8, 2474640), (9, 2199680), (10, 1979712), (12, 1649760), (14, 1414080), (15, 1319808), (16, 1237320), (18, 1099840), (20, 989856), (21, 942720), (24, 824880), (28, 707040), (30, 659904), (32, 618660), (35, 565632), (36, 549920), (40, 494928), (42, 471360), (45, 439936), (48, 412440), (56, 353520), (60, 329952), (63, 314240), (64, 309330), (70, 282816), (72, 274960), (80, 247464), (84, 235680), (90, 219968), (96, 206220), (105, 188544), (112, 176760), (120, 164976), (126, 157120), (128, 154665), (140, 141408), (144, 137480), (160, 123732), (168, 117840), (180, 109984), (192, 103110), (210, 94272), (224, 88380), (240, 82488), (252, 78560), (280, 70704), (288, 68740), (315, 62848), (320, 61866), (336, 58920), (360, 54992), (384, 51555), (420, 47136), (448, 44190), (480, 41244), (491, 40320), (504, 39280), (560, 35352), (576, 34370), (630, 31424), (640, 30933), (672, 29460), (720, 27496), (840, 23568), (896, 22095), (960, 20622), (982, 20160), (1008, 19640), (1120, 17676), (1152, 17185), (1260, 15712), (1344, 14730), (1440, 13748), (1473, 13440), (1680, 11784), (1920, 10311), (1964, 10080), (2016, 9820), (2240, 8838), (2455, 8064), (2520, 7856), (2688, 7365), (2880, 6874), (2946, 6720), (3360, 5892), (3437, 5760), (3928, 5040), (4032, 4910), (4419, 4480)]