20919344

素因数分解:

$2^4\times {\mathrm{251}}^1\times {\mathrm{5209}}^1$

素因数の和:5468

約数の個数: 20

約数和(自身を含む): 40700520

約数和(自身を除く): 19781176

約数列:

[1, 2, 4, 8, 16, 251, 502, 1004, 2008, 4016, 5209, 10418, 20836, 41672, 83344, 1307459, 2614918, 5229836, 10459672, 20919344]

約数ペア:

[(1, 20919344), (2, 10459672), (4, 5229836), (8, 2614918), (16, 1307459), (251, 83344), (502, 41672), (1004, 20836), (2008, 10418), (4016, 5209)]