20928656

素因数分解:

$2^4\times 7^1\times {\mathrm{67}}^1\times {\mathrm{2789}}^1$

素因数の和:2871

約数の個数: 40

約数和(自身を含む): 47050560

約数和(自身を除く): 26121904

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 56, 67, 112, 134, 268, 469, 536, 938, 1072, 1876, 2789, 3752, 5578, 7504, 11156, 19523, 22312, 39046, 44624, 78092, 156184, 186863, 312368, 373726, 747452, 1308041, 1494904, 2616082, 2989808, 5232164, 10464328, 20928656]

約数ペア:

[(1, 20928656), (2, 10464328), (4, 5232164), (7, 2989808), (8, 2616082), (14, 1494904), (16, 1308041), (28, 747452), (56, 373726), (67, 312368), (112, 186863), (134, 156184), (268, 78092), (469, 44624), (536, 39046), (938, 22312), (1072, 19523), (1876, 11156), (2789, 7504), (3752, 5578)]