19918384

素因数分解:

$2^4\times {\mathrm{19}}^1\times {\mathrm{65521}}^1$

素因数の和:65548

約数の個数: 20

約数和(自身を含む): 40623640

約数和(自身を除く): 20705256

約数列:

[1, 2, 4, 8, 16, 19, 38, 76, 152, 304, 65521, 131042, 262084, 524168, 1048336, 1244899, 2489798, 4979596, 9959192, 19918384]

約数ペア:

[(1, 19918384), (2, 9959192), (4, 4979596), (8, 2489798), (16, 1244899), (19, 1048336), (38, 524168), (76, 262084), (152, 131042), (304, 65521)]