20423760

素因数分解:

$2^4\times 3^1\times 5^1\times 7^1\times {\mathrm{12157}}^1$

素因数の和:12180

約数の個数: 80

約数和(自身を含む): 72364416

約数和(自身を除く): 51940656

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 15, 16, 20, 21, 24, 28, 30, 35, 40, 42, 48, 56, 60, 70, 80, 84, 105, 112, 120, 140, 168, 210, 240, 280, 336, 420, 560, 840, 1680, 12157, 24314, 36471, 48628, 60785, 72942, 85099, 97256, 121570, 145884, 170198, 182355, 194512, 243140, 255297, 291768, 340396, 364710, 425495, 486280, 510594, 583536, 680792, 729420, 850990, 972560, 1021188, 1276485, 1361584, 1458840, 1701980, 2042376, 2552970, 2917680, 3403960, 4084752, 5105940, 6807920, 10211880, 20423760]

約数ペア:

[(1, 20423760), (2, 10211880), (3, 6807920), (4, 5105940), (5, 4084752), (6, 3403960), (7, 2917680), (8, 2552970), (10, 2042376), (12, 1701980), (14, 1458840), (15, 1361584), (16, 1276485), (20, 1021188), (21, 972560), (24, 850990), (28, 729420), (30, 680792), (35, 583536), (40, 510594), (42, 486280), (48, 425495), (56, 364710), (60, 340396), (70, 291768), (80, 255297), (84, 243140), (105, 194512), (112, 182355), (120, 170198), (140, 145884), (168, 121570), (210, 97256), (240, 85099), (280, 72942), (336, 60785), (420, 48628), (560, 36471), (840, 24314), (1680, 12157)]