20997248

素因数分解:

$2^7\times {\mathrm{41}}^1\times {\mathrm{4001}}^1$

素因数の和:4056

約数の個数: 32

約数和(自身を含む): 42861420

約数和(自身を除く): 21864172

約数列:

[1, 2, 4, 8, 16, 32, 41, 64, 82, 128, 164, 328, 656, 1312, 2624, 4001, 5248, 8002, 16004, 32008, 64016, 128032, 164041, 256064, 328082, 512128, 656164, 1312328, 2624656, 5249312, 10498624, 20997248]

約数ペア:

[(1, 20997248), (2, 10498624), (4, 5249312), (8, 2624656), (16, 1312328), (32, 656164), (41, 512128), (64, 328082), (82, 256064), (128, 164041), (164, 128032), (328, 64016), (656, 32008), (1312, 16004), (2624, 8002), (4001, 5248)]