21135840

素因数分解:

$2^5\times 3^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{4003}}^1$

素因数の和:4032

約数の個数: 96

約数和(自身を含む): 72648576

約数和(自身を除く): 51512736

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 11, 12, 15, 16, 20, 22, 24, 30, 32, 33, 40, 44, 48, 55, 60, 66, 80, 88, 96, 110, 120, 132, 160, 165, 176, 220, 240, 264, 330, 352, 440, 480, 528, 660, 880, 1056, 1320, 1760, 2640, 4003, 5280, 8006, 12009, 16012, 20015, 24018, 32024, 40030, 44033, 48036, 60045, 64048, 80060, 88066, 96072, 120090, 128096, 132099, 160120, 176132, 192144, 220165, 240180, 264198, 320240, 352264, 384288, 440330, 480360, 528396, 640480, 660495, 704528, 880660, 960720, 1056792, 1320990, 1409056, 1761320, 1921440, 2113584, 2641980, 3522640, 4227168, 5283960, 7045280, 10567920, 21135840]

約数ペア:

[(1, 21135840), (2, 10567920), (3, 7045280), (4, 5283960), (5, 4227168), (6, 3522640), (8, 2641980), (10, 2113584), (11, 1921440), (12, 1761320), (15, 1409056), (16, 1320990), (20, 1056792), (22, 960720), (24, 880660), (30, 704528), (32, 660495), (33, 640480), (40, 528396), (44, 480360), (48, 440330), (55, 384288), (60, 352264), (66, 320240), (80, 264198), (88, 240180), (96, 220165), (110, 192144), (120, 176132), (132, 160120), (160, 132099), (165, 128096), (176, 120090), (220, 96072), (240, 88066), (264, 80060), (330, 64048), (352, 60045), (440, 48036), (480, 44033), (528, 40030), (660, 32024), (880, 24018), (1056, 20015), (1320, 16012), (1760, 12009), (2640, 8006), (4003, 5280)]