21481264

素因数分解:

$2^4\times 7^1\times {\mathrm{23}}^1\times {\mathrm{31}}^1\times {\mathrm{269}}^1$

素因数の和:338

約数の個数: 80

約数和(自身を含む): 51425280

約数和(自身を除く): 29944016

約数列:

[1, 2, 4, 7, 8, 14, 16, 23, 28, 31, 46, 56, 62, 92, 112, 124, 161, 184, 217, 248, 269, 322, 368, 434, 496, 538, 644, 713, 868, 1076, 1288, 1426, 1736, 1883, 2152, 2576, 2852, 3472, 3766, 4304, 4991, 5704, 6187, 7532, 8339, 9982, 11408, 12374, 15064, 16678, 19964, 24748, 30128, 33356, 39928, 43309, 49496, 58373, 66712, 79856, 86618, 98992, 116746, 133424, 173236, 191797, 233492, 346472, 383594, 466984, 692944, 767188, 933968, 1342579, 1534376, 2685158, 3068752, 5370316, 10740632, 21481264]

約数ペア:

[(1, 21481264), (2, 10740632), (4, 5370316), (7, 3068752), (8, 2685158), (14, 1534376), (16, 1342579), (23, 933968), (28, 767188), (31, 692944), (46, 466984), (56, 383594), (62, 346472), (92, 233492), (112, 191797), (124, 173236), (161, 133424), (184, 116746), (217, 98992), (248, 86618), (269, 79856), (322, 66712), (368, 58373), (434, 49496), (496, 43309), (538, 39928), (644, 33356), (713, 30128), (868, 24748), (1076, 19964), (1288, 16678), (1426, 15064), (1736, 12374), (1883, 11408), (2152, 9982), (2576, 8339), (2852, 7532), (3472, 6187), (3766, 5704), (4304, 4991)]