20380360

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{509}}^1$

素因数の和:551

約数の個数: 128

約数和(自身を含む): 61689600

約数和(自身を除く): 41309240

約数列:

[1, 2, 4, 5, 7, 8, 10, 11, 13, 14, 20, 22, 26, 28, 35, 40, 44, 52, 55, 56, 65, 70, 77, 88, 91, 104, 110, 130, 140, 143, 154, 182, 220, 260, 280, 286, 308, 364, 385, 440, 455, 509, 520, 572, 616, 715, 728, 770, 910, 1001, 1018, 1144, 1430, 1540, 1820, 2002, 2036, 2545, 2860, 3080, 3563, 3640, 4004, 4072, 5005, 5090, 5599, 5720, 6617, 7126, 8008, 10010, 10180, 11198, 13234, 14252, 17815, 20020, 20360, 22396, 26468, 27995, 28504, 33085, 35630, 39193, 40040, 44792, 46319, 52936, 55990, 66170, 71260, 72787, 78386, 92638, 111980, 132340, 142520, 145574, 156772, 185276, 195965, 223960, 231595, 264680, 291148, 313544, 363935, 370552, 391930, 463190, 509509, 582296, 727870, 783860, 926380, 1019018, 1455740, 1567720, 1852760, 2038036, 2547545, 2911480, 4076072, 5095090, 10190180, 20380360]

約数ペア:

[(1, 20380360), (2, 10190180), (4, 5095090), (5, 4076072), (7, 2911480), (8, 2547545), (10, 2038036), (11, 1852760), (13, 1567720), (14, 1455740), (20, 1019018), (22, 926380), (26, 783860), (28, 727870), (35, 582296), (40, 509509), (44, 463190), (52, 391930), (55, 370552), (56, 363935), (65, 313544), (70, 291148), (77, 264680), (88, 231595), (91, 223960), (104, 195965), (110, 185276), (130, 156772), (140, 145574), (143, 142520), (154, 132340), (182, 111980), (220, 92638), (260, 78386), (280, 72787), (286, 71260), (308, 66170), (364, 55990), (385, 52936), (440, 46319), (455, 44792), (509, 40040), (520, 39193), (572, 35630), (616, 33085), (715, 28504), (728, 27995), (770, 26468), (910, 22396), (1001, 20360), (1018, 20020), (1144, 17815), (1430, 14252), (1540, 13234), (1820, 11198), (2002, 10180), (2036, 10010), (2545, 8008), (2860, 7126), (3080, 6617), (3563, 5720), (3640, 5599), (4004, 5090), (4072, 5005)]