19855440

素因数分解:

$2^4\times 3^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{109}}^1$

素因数の和:162

約数の個数: 240

約数和(自身を含む): 76602240

約数和(自身を除く): 56746800

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 11, 12, 15, 16, 18, 20, 22, 23, 24, 30, 33, 36, 40, 44, 45, 46, 48, 55, 60, 66, 69, 72, 80, 88, 90, 92, 99, 109, 110, 115, 120, 132, 138, 144, 165, 176, 180, 184, 198, 207, 218, 220, 230, 240, 253, 264, 276, 327, 330, 345, 360, 368, 396, 414, 436, 440, 460, 495, 506, 528, 545, 552, 654, 660, 690, 720, 759, 792, 828, 872, 880, 920, 981, 990, 1012, 1035, 1090, 1104, 1199, 1265, 1308, 1320, 1380, 1518, 1584, 1635, 1656, 1744, 1840, 1962, 1980, 2024, 2070, 2180, 2277, 2398, 2507, 2530, 2616, 2640, 2760, 3036, 3270, 3312, 3597, 3795, 3924, 3960, 4048, 4140, 4360, 4554, 4796, 4905, 5014, 5060, 5232, 5520, 5995, 6072, 6540, 7194, 7521, 7590, 7848, 7920, 8280, 8720, 9108, 9592, 9810, 10028, 10120, 10791, 11385, 11990, 12144, 12535, 13080, 14388, 15042, 15180, 15696, 16560, 17985, 18216, 19184, 19620, 20056, 20240, 21582, 22563, 22770, 23980, 25070, 26160, 27577, 28776, 30084, 30360, 35970, 36432, 37605, 39240, 40112, 43164, 45126, 45540, 47960, 50140, 53955, 55154, 57552, 60168, 60720, 71940, 75210, 78480, 82731, 86328, 90252, 91080, 95920, 100280, 107910, 110308, 112815, 120336, 137885, 143880, 150420, 165462, 172656, 180504, 182160, 200560, 215820, 220616, 225630, 248193, 275770, 287760, 300840, 330924, 361008, 413655, 431640, 441232, 451260, 496386, 551540, 601680, 661848, 827310, 863280, 902520, 992772, 1103080, 1240965, 1323696, 1654620, 1805040, 1985544, 2206160, 2481930, 3309240, 3971088, 4963860, 6618480, 9927720, 19855440]

約数ペア:

[(1, 19855440), (2, 9927720), (3, 6618480), (4, 4963860), (5, 3971088), (6, 3309240), (8, 2481930), (9, 2206160), (10, 1985544), (11, 1805040), (12, 1654620), (15, 1323696), (16, 1240965), (18, 1103080), (20, 992772), (22, 902520), (23, 863280), (24, 827310), (30, 661848), (33, 601680), (36, 551540), (40, 496386), (44, 451260), (45, 441232), (46, 431640), (48, 413655), (55, 361008), (60, 330924), (66, 300840), (69, 287760), (72, 275770), (80, 248193), (88, 225630), (90, 220616), (92, 215820), (99, 200560), (109, 182160), (110, 180504), (115, 172656), (120, 165462), (132, 150420), (138, 143880), (144, 137885), (165, 120336), (176, 112815), (180, 110308), (184, 107910), (198, 100280), (207, 95920), (218, 91080), (220, 90252), (230, 86328), (240, 82731), (253, 78480), (264, 75210), (276, 71940), (327, 60720), (330, 60168), (345, 57552), (360, 55154), (368, 53955), (396, 50140), (414, 47960), (436, 45540), (440, 45126), (460, 43164), (495, 40112), (506, 39240), (528, 37605), (545, 36432), (552, 35970), (654, 30360), (660, 30084), (690, 28776), (720, 27577), (759, 26160), (792, 25070), (828, 23980), (872, 22770), (880, 22563), (920, 21582), (981, 20240), (990, 20056), (1012, 19620), (1035, 19184), (1090, 18216), (1104, 17985), (1199, 16560), (1265, 15696), (1308, 15180), (1320, 15042), (1380, 14388), (1518, 13080), (1584, 12535), (1635, 12144), (1656, 11990), (1744, 11385), (1840, 10791), (1962, 10120), (1980, 10028), (2024, 9810), (2070, 9592), (2180, 9108), (2277, 8720), (2398, 8280), (2507, 7920), (2530, 7848), (2616, 7590), (2640, 7521), (2760, 7194), (3036, 6540), (3270, 6072), (3312, 5995), (3597, 5520), (3795, 5232), (3924, 5060), (3960, 5014), (4048, 4905), (4140, 4796), (4360, 4554)]