20687040

素因数分解:

$2^6\times 3^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{653}}^1$

素因数の和:687

約数の個数: 168

約数和(自身を含む): 77742288

約数和(自身を除く): 57055248

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 11, 12, 15, 16, 18, 20, 22, 24, 30, 32, 33, 36, 40, 44, 45, 48, 55, 60, 64, 66, 72, 80, 88, 90, 96, 99, 110, 120, 132, 144, 160, 165, 176, 180, 192, 198, 220, 240, 264, 288, 320, 330, 352, 360, 396, 440, 480, 495, 528, 576, 653, 660, 704, 720, 792, 880, 960, 990, 1056, 1306, 1320, 1440, 1584, 1760, 1959, 1980, 2112, 2612, 2640, 2880, 3168, 3265, 3520, 3918, 3960, 5224, 5280, 5877, 6336, 6530, 7183, 7836, 7920, 9795, 10448, 10560, 11754, 13060, 14366, 15672, 15840, 19590, 20896, 21549, 23508, 26120, 28732, 29385, 31344, 31680, 35915, 39180, 41792, 43098, 47016, 52240, 57464, 58770, 62688, 64647, 71830, 78360, 86196, 94032, 104480, 107745, 114928, 117540, 125376, 129294, 143660, 156720, 172392, 188064, 208960, 215490, 229856, 235080, 258588, 287320, 313440, 323235, 344784, 376128, 430980, 459712, 470160, 517176, 574640, 626880, 646470, 689568, 861960, 940320, 1034352, 1149280, 1292940, 1379136, 1723920, 1880640, 2068704, 2298560, 2585880, 3447840, 4137408, 5171760, 6895680, 10343520, 20687040]

約数ペア:

[(1, 20687040), (2, 10343520), (3, 6895680), (4, 5171760), (5, 4137408), (6, 3447840), (8, 2585880), (9, 2298560), (10, 2068704), (11, 1880640), (12, 1723920), (15, 1379136), (16, 1292940), (18, 1149280), (20, 1034352), (22, 940320), (24, 861960), (30, 689568), (32, 646470), (33, 626880), (36, 574640), (40, 517176), (44, 470160), (45, 459712), (48, 430980), (55, 376128), (60, 344784), (64, 323235), (66, 313440), (72, 287320), (80, 258588), (88, 235080), (90, 229856), (96, 215490), (99, 208960), (110, 188064), (120, 172392), (132, 156720), (144, 143660), (160, 129294), (165, 125376), (176, 117540), (180, 114928), (192, 107745), (198, 104480), (220, 94032), (240, 86196), (264, 78360), (288, 71830), (320, 64647), (330, 62688), (352, 58770), (360, 57464), (396, 52240), (440, 47016), (480, 43098), (495, 41792), (528, 39180), (576, 35915), (653, 31680), (660, 31344), (704, 29385), (720, 28732), (792, 26120), (880, 23508), (960, 21549), (990, 20896), (1056, 19590), (1306, 15840), (1320, 15672), (1440, 14366), (1584, 13060), (1760, 11754), (1959, 10560), (1980, 10448), (2112, 9795), (2612, 7920), (2640, 7836), (2880, 7183), (3168, 6530), (3265, 6336), (3520, 5877), (3918, 5280), (3960, 5224)]