20804940280

素因数分解:

$2^3\times 5^1\times {\mathrm{520123507}}^1$

素因数の和:520123518

約数の個数: 16

約数和(自身を含む): 46811115720

約数和(自身を除く): 26006175440

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 520123507, 1040247014, 2080494028, 2600617535, 4160988056, 5201235070, 10402470140, 20804940280]

約数ペア:

[(1, 20804940280), (2, 10402470140), (4, 5201235070), (5, 4160988056), (8, 2600617535), (10, 2080494028), (20, 1040247014), (40, 520123507)]