21141840

素因数分解:

$2^4\times 3^1\times 5^1\times {\mathrm{137}}^1\times {\mathrm{643}}^1$

素因数の和:796

約数の個数: 80

約数和(自身を含む): 66120768

約数和(自身を除く): 44978928

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 20, 24, 30, 40, 48, 60, 80, 120, 137, 240, 274, 411, 548, 643, 685, 822, 1096, 1286, 1370, 1644, 1929, 2055, 2192, 2572, 2740, 3215, 3288, 3858, 4110, 5144, 5480, 6430, 6576, 7716, 8220, 9645, 10288, 10960, 12860, 15432, 16440, 19290, 25720, 30864, 32880, 38580, 51440, 77160, 88091, 154320, 176182, 264273, 352364, 440455, 528546, 704728, 880910, 1057092, 1321365, 1409456, 1761820, 2114184, 2642730, 3523640, 4228368, 5285460, 7047280, 10570920, 21141840]

約数ペア:

[(1, 21141840), (2, 10570920), (3, 7047280), (4, 5285460), (5, 4228368), (6, 3523640), (8, 2642730), (10, 2114184), (12, 1761820), (15, 1409456), (16, 1321365), (20, 1057092), (24, 880910), (30, 704728), (40, 528546), (48, 440455), (60, 352364), (80, 264273), (120, 176182), (137, 154320), (240, 88091), (274, 77160), (411, 51440), (548, 38580), (643, 32880), (685, 30864), (822, 25720), (1096, 19290), (1286, 16440), (1370, 15432), (1644, 12860), (1929, 10960), (2055, 10288), (2192, 9645), (2572, 8220), (2740, 7716), (3215, 6576), (3288, 6430), (3858, 5480), (4110, 5144)]