21000663504

素因数分解:

$2^4\times 3^3\times {\mathrm{193}}^1\times {\mathrm{251879}}^1$

素因数の和:252089

約数の個数: 80

約数和(自身を含む): 60592252800

約数和(自身を除く): 39591589296

約数列:

[1, 2, 3, 4, 6, 8, 9, 12, 16, 18, 24, 27, 36, 48, 54, 72, 108, 144, 193, 216, 386, 432, 579, 772, 1158, 1544, 1737, 2316, 3088, 3474, 4632, 5211, 6948, 9264, 10422, 13896, 20844, 27792, 41688, 83376, 251879, 503758, 755637, 1007516, 1511274, 2015032, 2266911, 3022548, 4030064, 4533822, 6045096, 6800733, 9067644, 12090192, 13601466, 18135288, 27202932, 36270576, 48612647, 54405864, 97225294, 108811728, 145837941, 194450588, 291675882, 388901176, 437513823, 583351764, 777802352, 875027646, 1166703528, 1312541469, 1750055292, 2333407056, 2625082938, 3500110584, 5250165876, 7000221168, 10500331752, 21000663504]

約数ペア:

[(1, 21000663504), (2, 10500331752), (3, 7000221168), (4, 5250165876), (6, 3500110584), (8, 2625082938), (9, 2333407056), (12, 1750055292), (16, 1312541469), (18, 1166703528), (24, 875027646), (27, 777802352), (36, 583351764), (48, 437513823), (54, 388901176), (72, 291675882), (108, 194450588), (144, 145837941), (193, 108811728), (216, 97225294), (386, 54405864), (432, 48612647), (579, 36270576), (772, 27202932), (1158, 18135288), (1544, 13601466), (1737, 12090192), (2316, 9067644), (3088, 6800733), (3474, 6045096), (4632, 4533822), (5211, 4030064), (6948, 3022548), (9264, 2266911), (10422, 2015032), (13896, 1511274), (20844, 1007516), (27792, 755637), (41688, 503758), (83376, 251879)]