20986496

素因数分解:

$2^7\times {\mathrm{127}}^1\times {\mathrm{1291}}^1$

素因数の和:1432

約数の個数: 32

約数和(自身を含む): 42170880

約数和(自身を除く): 21184384

約数列:

[1, 2, 4, 8, 16, 32, 64, 127, 128, 254, 508, 1016, 1291, 2032, 2582, 4064, 5164, 8128, 10328, 16256, 20656, 41312, 82624, 163957, 165248, 327914, 655828, 1311656, 2623312, 5246624, 10493248, 20986496]

約数ペア:

[(1, 20986496), (2, 10493248), (4, 5246624), (8, 2623312), (16, 1311656), (32, 655828), (64, 327914), (127, 165248), (128, 163957), (254, 82624), (508, 41312), (1016, 20656), (1291, 16256), (2032, 10328), (2582, 8128), (4064, 5164)]