20685840

素因数分解:

$2^4\times 3^1\times 5^1\times 7^2\times {\mathrm{1759}}^1$

素因数の和:1789

約数の個数: 120

約数和(自身を含む): 74638080

約数和(自身を除く): 53952240

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 15, 16, 20, 21, 24, 28, 30, 35, 40, 42, 48, 49, 56, 60, 70, 80, 84, 98, 105, 112, 120, 140, 147, 168, 196, 210, 240, 245, 280, 294, 336, 392, 420, 490, 560, 588, 735, 784, 840, 980, 1176, 1470, 1680, 1759, 1960, 2352, 2940, 3518, 3920, 5277, 5880, 7036, 8795, 10554, 11760, 12313, 14072, 17590, 21108, 24626, 26385, 28144, 35180, 36939, 42216, 49252, 52770, 61565, 70360, 73878, 84432, 86191, 98504, 105540, 123130, 140720, 147756, 172382, 184695, 197008, 211080, 246260, 258573, 295512, 344764, 369390, 422160, 430955, 492520, 517146, 591024, 689528, 738780, 861910, 985040, 1034292, 1292865, 1379056, 1477560, 1723820, 2068584, 2585730, 2955120, 3447640, 4137168, 5171460, 6895280, 10342920, 20685840]

約数ペア:

[(1, 20685840), (2, 10342920), (3, 6895280), (4, 5171460), (5, 4137168), (6, 3447640), (7, 2955120), (8, 2585730), (10, 2068584), (12, 1723820), (14, 1477560), (15, 1379056), (16, 1292865), (20, 1034292), (21, 985040), (24, 861910), (28, 738780), (30, 689528), (35, 591024), (40, 517146), (42, 492520), (48, 430955), (49, 422160), (56, 369390), (60, 344764), (70, 295512), (80, 258573), (84, 246260), (98, 211080), (105, 197008), (112, 184695), (120, 172382), (140, 147756), (147, 140720), (168, 123130), (196, 105540), (210, 98504), (240, 86191), (245, 84432), (280, 73878), (294, 70360), (336, 61565), (392, 52770), (420, 49252), (490, 42216), (560, 36939), (588, 35180), (735, 28144), (784, 26385), (840, 24626), (980, 21108), (1176, 17590), (1470, 14072), (1680, 12313), (1759, 11760), (1960, 10554), (2352, 8795), (2940, 7036), (3518, 5880), (3920, 5277)]