19847401960

素因数分解:

$2^3\times 5^1\times {\mathrm{23}}^1\times {\mathrm{67}}^1\times {\mathrm{149}}^1\times {\mathrm{2161}}^1$

素因数の和:2411

約数の個数: 128

約数和(自身を含む): 47633184000

約数和(自身を除く): 27785782040

約数列:

[1, 2, 4, 5, 8, 10, 20, 23, 40, 46, 67, 92, 115, 134, 149, 184, 230, 268, 298, 335, 460, 536, 596, 670, 745, 920, 1192, 1340, 1490, 1541, 2161, 2680, 2980, 3082, 3427, 4322, 5960, 6164, 6854, 7705, 8644, 9983, 10805, 12328, 13708, 15410, 17135, 17288, 19966, 21610, 27416, 30820, 34270, 39932, 43220, 49703, 49915, 61640, 68540, 79864, 86440, 99406, 99830, 137080, 144787, 198812, 199660, 229609, 248515, 289574, 321989, 397624, 399320, 459218, 497030, 579148, 643978, 723935, 918436, 994060, 1148045, 1158296, 1287956, 1447870, 1609945, 1836872, 1988120, 2296090, 2575912, 2895740, 3219890, 3330101, 4592180, 5791480, 6439780, 6660202, 7405747, 9184360, 12879560, 13320404, 14811494, 16650505, 21573263, 26640808, 29622988, 33301010, 37028735, 43146526, 59245976, 66602020, 74057470, 86293052, 107866315, 133204040, 148114940, 172586104, 215732630, 296229880, 431465260, 496185049, 862930520, 992370098, 1984740196, 2480925245, 3969480392, 4961850490, 9923700980, 19847401960]

約数ペア:

[(1, 19847401960), (2, 9923700980), (4, 4961850490), (5, 3969480392), (8, 2480925245), (10, 1984740196), (20, 992370098), (23, 862930520), (40, 496185049), (46, 431465260), (67, 296229880), (92, 215732630), (115, 172586104), (134, 148114940), (149, 133204040), (184, 107866315), (230, 86293052), (268, 74057470), (298, 66602020), (335, 59245976), (460, 43146526), (536, 37028735), (596, 33301010), (670, 29622988), (745, 26640808), (920, 21573263), (1192, 16650505), (1340, 14811494), (1490, 13320404), (1541, 12879560), (2161, 9184360), (2680, 7405747), (2980, 6660202), (3082, 6439780), (3427, 5791480), (4322, 4592180), (5960, 3330101), (6164, 3219890), (6854, 2895740), (7705, 2575912), (8644, 2296090), (9983, 1988120), (10805, 1836872), (12328, 1609945), (13708, 1447870), (15410, 1287956), (17135, 1158296), (17288, 1148045), (19966, 994060), (21610, 918436), (27416, 723935), (30820, 643978), (34270, 579148), (39932, 497030), (43220, 459218), (49703, 399320), (49915, 397624), (61640, 321989), (68540, 289574), (79864, 248515), (86440, 229609), (99406, 199660), (99830, 198812), (137080, 144787)]