21025656

素因数分解:

$2^3\times 3^4\times {\mathrm{71}}^1\times {\mathrm{457}}^1$

素因数の和:546

約数の個数: 80

約数和(自身を含む): 59851440

約数和(自身を除く): 38825784

約数列:

[1, 2, 3, 4, 6, 8, 9, 12, 18, 24, 27, 36, 54, 71, 72, 81, 108, 142, 162, 213, 216, 284, 324, 426, 457, 568, 639, 648, 852, 914, 1278, 1371, 1704, 1828, 1917, 2556, 2742, 3656, 3834, 4113, 5112, 5484, 5751, 7668, 8226, 10968, 11502, 12339, 15336, 16452, 23004, 24678, 32447, 32904, 37017, 46008, 49356, 64894, 74034, 97341, 98712, 129788, 148068, 194682, 259576, 292023, 296136, 389364, 584046, 778728, 876069, 1168092, 1752138, 2336184, 2628207, 3504276, 5256414, 7008552, 10512828, 21025656]

約数ペア:

[(1, 21025656), (2, 10512828), (3, 7008552), (4, 5256414), (6, 3504276), (8, 2628207), (9, 2336184), (12, 1752138), (18, 1168092), (24, 876069), (27, 778728), (36, 584046), (54, 389364), (71, 296136), (72, 292023), (81, 259576), (108, 194682), (142, 148068), (162, 129788), (213, 98712), (216, 97341), (284, 74034), (324, 64894), (426, 49356), (457, 46008), (568, 37017), (639, 32904), (648, 32447), (852, 24678), (914, 23004), (1278, 16452), (1371, 15336), (1704, 12339), (1828, 11502), (1917, 10968), (2556, 8226), (2742, 7668), (3656, 5751), (3834, 5484), (4113, 5112)]