20977168

素因数分解:

$2^4\times {\mathrm{61}}^1\times {\mathrm{21493}}^1$

素因数の和:21562

約数の個数: 20

約数和(自身を含む): 41311468

約数和(自身を除く): 20334300

約数列:

[1, 2, 4, 8, 16, 61, 122, 244, 488, 976, 21493, 42986, 85972, 171944, 343888, 1311073, 2622146, 5244292, 10488584, 20977168]

約数ペア:

[(1, 20977168), (2, 10488584), (4, 5244292), (8, 2622146), (16, 1311073), (61, 343888), (122, 171944), (244, 85972), (488, 42986), (976, 21493)]