16003978

素因数分解:

$2^1\times {\mathrm{79}}^1\times {\mathrm{199}}^1\times {\mathrm{509}}^1$

素因数の和:789

約数の個数: 16

約数和(自身を含む): 24480000

約数和(自身を除く): 8476022

約数列:

[1, 2, 79, 158, 199, 398, 509, 1018, 15721, 31442, 40211, 80422, 101291, 202582, 8001989, 16003978]

約数ペア:

[(1, 16003978), (2, 8001989), (79, 202582), (158, 101291), (199, 80422), (398, 40211), (509, 31442), (1018, 15721)]